EasyCharts — Changelog

Changes from version 4.0.4 to 4.1

GaugeChart new feature: multi-line title
GaugeChart new feature: possibility to select pointers and legend labels
GaugeChart new feature: floating labels when mouse over pointers (floatingLabelsOn=true)
GaugeChart new feature: possibility to assign labels to pointers (pointerLabelsOn, pointerLabels)
GaugeChart new feature: possibility to set range start and end angles (rangeStartAngle, rangeEndAngle)
GaugeChart new feature: possibility to set color of the edge outline if the gauge angle is less than 360 degrees (edgeColor)
GaugeChart new feature: possibility to create 3D style gauge by using gradient borders (border_N=size,color1,color2)
GaugeChart new feature: possibility to display range labels inside the border (rangeLabelStyle=border)
GaugeChart new feature: possibility to set size of the range ticks (rangeTickSize)
GaugeChart new feature: possibility to set style of the range ticks (rangeTickStyle=thin|thick|round|diamond)
GaugeChart new feature: possibility to set alignment of the gauge (gaugeAlignment=top|bottom|center|left|right)
GaugeChart new feature: possibility to set color of the floating labels (floatingLabelColor)
GaugeChart bug fixed: overlapping range labels, range highlight and sector highlight
LineChart new feature: added parameter which defines if missing data in the stacked chart should be interpolated or handled as empty values (missingValuesInterpolated)
LineChart bug fixed: wrong order of the 3D lines
LineChart bug fixed: better behavior of empty values in stacked mode
Bar Chart bug fixed: sample labels in the horizontal mode had center alignment instead of right
Pie Chart bug fixed: slice was not displayed if it occupied 50% of the pie
Pie Chart bug fixed: when displaying a slice with negative value the absolute value is used, but the original value is displayed
Bug fixed: legend labels did not fit legend box when setLegendBoxSizeAsFont() was not used
Bug fixed: chart type could be set only with applet parameter and never from the data file
Bug fixed: label_N, labelColor_N, labelFont_N, labelAngle_N parameters did not work from the data file

Changes from version 4.0.3 to 4.0.4

Added the possibility to use gradient chart background colors for the GaugeChart.
Added possibility to use multi-line title in the GaugeChart.
Added legendBoxAsFontSize parameter which sets the legend box size to the same as the legendFont size.
Added set/isMissingValuesInterpolated() method that should be used to define whether the empty values for the stacked lines should be treated as 0 or if they should be automatically calculated.
Better compatibility with Servoy (inheriting from a lightweight JComponent instead of heavyweight Component).
Better handling of the bars when using many of them with no space between (0,1,2 px bars).
Changed behavior of rangeDecimalCount=auto. Now it is set to 1 when the difference between current upper range and current lower range is < 10, set to 2 if the difference is < 1, set to 3 if the difference is less than 0.1, and so on.
Fixed a problem where the data file was never reloaded on JDK 1.6.
Fixed a bug in the GaugeChart where the outside range labels was cut.
Fixed a bug where the overlay 3D lines over 3D bars did not adjust properly on the initial data load.
Fixed a bug where multiline labels were not displayed properly when using sequential \n\n.
Fixed a bug where some bars were not displayed when many bars were used.
Fixed an exception that was thrown by FontMetrics.getWidth(string) when string length was 0.
Fixed a bug where the legend scroller was displayed when using servlets.

Changes from version 4.0.2 to 4.0.3

Added a getLabelPosition(String) method, that returns insertion point of the custom label.
Added png24alpha option to the "format" parameter. It should be used in order to get transparent PNG images from the ChartServlet.
Added floatingLabelsOn parameter which makes it possible to use floating labels for range and legend (over the pointers) in the GaugeChart.
Added the pointerSize parameter so it is possible to set length of the pointers in the GaugeChart.
Fixed a bug where the 3D sample highlights were sometimes not displayed for the line charts with empty values.
Fixed a bug where the SplineChart with sample highlights were not properly rendered.
Fixed a bug where the chart grid were not recalculated after the ranges were removed.
Fixed a bug where an ArrayOutOfBoundsException has been thrown when a user tried to programmatically select several samples with same sample index in different series.
Fixed a bug where stacked 3D line chart were not displayed properly when the stacked line were smaller than the 3D effect.
Fixed a bug in PlotterChart where the seriesColors were not set properly when more than 20 colors were used.
Fixed a NullPointerException which happened when the series number formatter were used.
Changed the way legend is rendered: if the sample is painted with gradient, legend is also gradient.
More efficient use of space between the range labels.

Changes from version 4.0.1 to 4.0.2

Added legend support for the GaugeChart.
Added rangeInterval parameter to the GaugeChart. It allows to set interval between the range ticks explicitly.
Added setTimeFormatOutLocale() method and timeFormatOutLocale parameter in the TimeLineChart that allows to display non-default Locale for the time labels.
Fixed a bug where the sampleColors were not set properly when more than 20 colors were used.
Fixed a bug where the right and left legend overlapped the chart title.
Fixed a bug where the legend scroller were displayed when not needed.
Fixed a bug where the legend were not displayed when set below the chart grid.
Fixed an exception that has been thrown when the lineStroke parameter were set to 0.
Fixed a bug where the border of a pie was deformed when a slice took 50% of the chart.
Fixed a bug where the negative value cylinder bars were not displayed properly.
Fixed a bug where the value labels were displayed outside the grid of the LineChart.

Changes from version 4.0 to 4.0.1

Added gradientSamplesOn parameter for the PieChart which makes it possible to turn on/off gradient colors for the pie samples.
Fixed a bug where it was not possible to set color of the slice separator in the PieChart.
Fixed a bug where the seriesLabelColor parameter did not work in PlotterChart.
Fixed a bug where overlayed samples could not be selected without selecting the basic chart.
Fixed a bug where the automatic range were not applied to the overlay charts.
Fixed a bug where the graph insets were not calculated properly.
Fixed a bug where the grid bounds were not adjusted for the angled sample labels of the bar and line charts.
Fixed a bug where some range labels were not displayed when using JDK 1.3.
Fixed a bug where tube-style lines failed when using empty values.

EasyCharts 4.0 — New Features Summary

New look and feel

Gradient sample colors for bars, stacked and 3D lines.
Gradient background inside and outside the grid.
Alternate background inside the grid.

New LineChart features

Tube line style.
Areas in 3D mode.
Possibility to turn outline on and off for the stacked and 3D lines.
Possibility to set depth of a specific 3D line.
Possibility to display 3D lines on the same 3D level.

New BarChart features

Cylinder bars.

Other features

Possibility to turn on/off the right-front 3D edge of the grid.
Custom range formatters for the plotter chart.

Changes from version 4.0beta2 to 4.0

Fixed a bug where the overlay stacked line chart did not display.
Fixed a bug where the overlay charts were not aligned properly inside the 3D grid.
Fixed a bug where the lineStroke and lineWidth were not applied to the line chart.
Fixed a bug where the sample highlights were displayed outside the grid.

Changes from version 4.0beta1 to 4.0beta2

Enhanced performance of the LineChart.
Enhanced 3D PieChart rendering.
Fixed a bug where the floating percent label were not displayed.
Fixed a bug with grid adjustment where the horizontal range is on.
Fixed a bug with wrong grid insets calculation for the horizontal bars.
Fixed a bug where number of range ticks/grid lines did not match.
Fixed several other minor bugs.
Enhanced robustness.

Changes from version 3.5 to 4.0beta1

Added possibility to set gradient background inside and outside the grid.
Added alternateChartBackground parameter.
Added lineStyle parameter (tube lines in the LineChart).
Added barShape parameter (cylinder bars).
Added outlineOff parameter for stacked and 3D line outlines.
Added possibility to set gradient colors for bars, 3D and stacked lines.
Added line3DDepth parameter.
Added gridOutline3DOn parameter to turn on/off the right-front 3D edge of the grid.
Added possibility to use custom range formatters for the plotter chart.
Added possibility to display 3D lines on the same level in 3D mode.
Added possibility to display areas in 3D mode in the LineChart.

EasyCharts 3.5 — New Features Summary

New chart types

Added GaugeChart for speedometer-like gauge charts.
Added possibility to display bar series behind each other.
Added possibility to fill area between two lines.

New look and feel

Added possibility to use transparent colors (#rrggbbaa where aa is the alpha component).
The anti-aliasing feature is made default for all chart types.

New servlet features

Added support for the floating labels in servlet.
Added possibility to use relative URLs to load data and images in the ChartServlet.
Added possibility to assign URL for custom labels in servlets.

New plotter chart features

PlotterChart can be used as overlay now.
Added supports of the anywhere labels to the PlotterChart.
Added drilldown support for the PlotterChart.
Added XRangeLabelFont parameter.
Added plotLabelFont parameter.

New overlay chart features

Overlay charts can be displayed in 3D mode.
Added possibility to set insets for overlays.

Other new features

Added possibility to set custom formats to any series or range.
Added possibility to set interval between the range ticks explicitly.
Added possibility to set angles, colors and fonts for anywhere labels.
Sample highlights are now available in the 3D LineChart.

Changes from version 3.5pre2 to 3.5

Anti-aliasing is now default for all chart types.
Fixed proper behavior of inside and outside value labels for the stacked lines.
Added XRangeLabelFont parameter to the plotter chart.
Added plotLabelFont parameter to the plotter chart.
Fixed a bug where it was not possible to use multi-line XRangeLabels.
Fixed a bug with legend sliders coming up when not needed.
Fixed an exception when the number of legend entries were more than number of samples.
Fixed a bug where relative custom labels failed on the pie charts.
Fixed a bug where grid lines were painted over the grid outline on 3D charts.
Fixed a bug where label URLs did not work in the plotter chart applet.
Fixed a bug where rotated labels were chopped in the JDK 1.3.1.
Fixed a bug where overlay parameters were not reset on data reload.
Fixed a bug where 3D pies were sometimes not displayed on applet start.
Fixed a bug where both sample URL and default URL were opened when clicked on a chart sample.
Fixed a bug where the transparent background were not cleared on repaint.
Fixed a bug where the sample highlight for the legend in the line chart were not displayed.
Fixed a bug where the legend marks sometimes were not displayed.
Fixed a bug where the bottom and top range labels were rendered twice (noticeable when antialiased).
Fixed a bug where the gauge chart size sometimes were too small.

Changes from version 3.5pre1 to 3.5pre2

Added possibility to use relative URLs to load data and images in the ChartServlet.
Added possibility to associate URLs with a group of samples having the same index across the different series (url_x_N).
Changed behaviour of the range label when using rangeInterval parameter.
Fixed a bug where the exception java.lang.NoSuchMethodError: java/awt/Color: method getAlpha()I not found were thrown by the Microsoft VM.

Changes from version 3.0.2 to 3.5pre1

The BarChartApplet, LineChartApplet, PieChartApplet and TimeLineChartApplet has been removed. Use <param name=chart value=bar|line|pie|time_line|plotter|spline|gauge> to define the chart type.
Added com.objectplanet.chart.ext.GaugeChart for speedometer-like gauge charts.
Added possibility to display bar series behind each other.
Added possibility to fill area between two lines.
Added possibility to set custom formats to any series or range.
Added possibility to set interval between the range ticks explicitly.
Added possibility to assign URL for custom labels in servlets.
Added possibility to set angles, colors and fonts for anywhere labels.
Added possibility to set insets for the overlays.
Added possibility to use transparent colors (#rrggbbaa where aa is the alpha component).
PlotterChart can be used as overlay now.
Added supports of the anywhere labels to the PlotterChart.
Overlay charts can be displayed in 3D mode now.
Sample highlights are now available in the 3D LineChart.
The overlay TimeLineChart is displayed with the sample labels below the grid if they are turned on.
Added support for the floating labels in servlet.
Added drilldown support for the PlotterChart.
Added possibility to turn on anti-aliasing (applets, servlets, applications).
Added possibility to assign target value lines/labels to the given range.
Fixed a bug with decimals when the range is set to big values.
Fixed a bug where it was not possible to zoom directly to the highest value of the chart.
Fixed a bug where zooming did not work for ranges less than 1 and higher than 0.

Changes from version 3.0.1 to 3.0.2

Added plotSortingOn parameter to the PlotterChart.
Fixed a bug in the PlotterChart where the plot sizes were not sorted along with the plots.
Fixed a bug in the BarChart where the sum of stacked bars were sometimes calculated wrongly.
Fixed a bug which caused an exception when updating the sampleCount or seriesCount with legend turned on.

Changes from version 3.0 to 3.0.1

Added possibility to use TimeLineChart as overlay.
Added <param name=plotSize_N value=size> for the PlotterChart.
Fixed a bug in the BarChart where the first bar could not be selected.
Fixed a bug which caused problems with angled labels when running on Microsoft VM.
Fixed a bug where labels with absolute positions were not placed correctly on applet start.
Added possibility to use drilldown with overlay charts on servlets.
Fixed a bug where the servlet drilldown did not work with JDK 1.3 and lower.
Fixed a servlet bug where the imagemap for the LineChart were not generated properly.
Fixed a bug where the last below sample label displayed was not the one corresponding to the last visible sample.
Fixed problems with outside and pointing labels of the PieChart appearing when empty values were used.
Fixed a bug where the antialiased charts could not be resized.

EasyCharts 3.0 — New Features Summary

Added a plotter and bubble chart (com.objectplanet.chart.ext.PlotterChart).
Added a spline chart (com.objectplanet.chart.ext.SplineChart).
Added mouse zooming.
Added multirow/multicolumn legend and scrollable legend.
Added multiple ranges.
Added possibility for labels anywhere in the chart with attached URLs and samples (pointers).
Added possibility for images in chart grid.
Added possibility to rotate pies.
Added headless support for JDK 1.4.
Added possibility to use dotted and dashed lines in the LineChart.
Added possibility to use antialiased labels when running on JDK 1.2 or higher.
Added possibility to use data file in any encoding.
Added possibility to use Unicode character sequences in servlets and applets '\uxxxx'.

Changes from version 3.0pre2 to 3.0pre3

Added seriesLabelFont parameter for the BarChart and LineChart.
Added possibility to attach a URL to the whole chart.
Added possibility to control the quality/size of the JPEG image returned by the servlet.
Added possibility to set the ChartServlet output type to image or html.
Added possibility to set colors and grid lines for the custom labels on the X-Axis in the PlotterChart.
Added possibility to automatically adjust plot labels and X-Axis labels so they don't overlap.
Added possibility to display vertical grid lines on the PlotterChart.
Added renderOffScreen() to create subclasses with new graphics without flickering.
Added possibility to display sample highlight images in legend.
Better performance of the PlotterChart.
Added drilldown functionality per time plot for the TimeLineChart (URL_N_TIME).

Changes from version 3.0pre1 to 3.0pre2

Added drilldown support for the plotter chart.
Added possibility to use target value lines in the PlotterChart.
Added possibility to set labels for any plots in the PlotterChart.
Added possibility to set custom labels on the X-Axis in the PlotterChart.
Added possibility to display legend in reversed order.
Added possibility to use data file in any encoding.
Fixed autoLabelSpacingOn for horizontal bar labels.
Added possibility to use dotted and dashed lines in the LineChart.
New algorithm for the angled labels with support for antialiasing.

Changes from version 2.7 to 3.0pre1

Added com.objectplanet.chart.ext.PlotterChart for plot, x/y, bubble charts.
Added com.objectplanet.chart.ext.SplineChart for smooth point line charts.
com.objectplanet.chart.ext.TimeLineChartApplet is removed in favor of com.objectplanet.chart.ext.TimeLineChart.
Added <param value=chart name=bar|line|pie|time_line|spline|plotter>.
Added support for switching between base chart types at runtime.
Added possibility to use multiple ranges (more than 2) for a chart.
Added <param name=zoomOn value=true> to enable mouse box zooming.
Added <param name=legendColumns value=N> to align legend in columns.
Added scrollable legend (turned on automatically when there is not enough space).
Added <param name="label_N" value="text,absolute_x,absolute_y"> for labels at any position.
Added <param name="labelURL_N" value="adress.html"> to assign URLs to labels.
Added possibility to drag relative labels with the mouse pointer.
Added URL drilldowns for servlets.
Added possibility to show OUTSIDE angled labels for the horizontal bars.
Added <param name="gridImage" value="background.gif">.
Added <param name=pieRotationOn value=true>.
Added OUTSIDE and POINTING labels for the PieChart.
Fixed a bug where it was possible to make the sample scroller too small to drag.
Fixed a bug which caused the inverted ranges to not work properly.
Fixed a bug in the LineChart where the 3D lines were displayed outside the grid.
Fixed proper legend placement in the PieChart when using insets.
Fixed a bug in BarChart which caused that the bars did not display properly on IBM JDK.
Fixed a bug in the JpegEncoder which caused the ChartServlet to hang on IBM WebSphere Developer Studio.
Fixed a bug where the angled labels were displayed repeatedly.
Fixed a problem with printout on Win98 with IE6.0 installed.
Made it possible to run ChartServlet on headless systems with JDK 1.4.
Made it possible to set the overlay chart color from JavaScript.
All code from the BarChartApplet, LineChartApplet, PieChartApplet is moved to the ChartApplet.

EasyCharts 2.7 — New Features Summary

Added overlay charts for servlets.
Added possibility to load data from a URL at startup and at intervals.
Added possibility to call javascript methods for URL parameters (drilldown).
Added floating labels for overlay charts.
Added possibility for the user to adjust the chart grid at runtime in the bar and line chart.
Added possibility to set postfix and prefix labels for the second range.
Added possibility to turn off range labels for the second range.
Added possibility to configure the color of labels inside pie slices.
Added possibility to use the chart applets within other applets.
Added below and floating sample labels in line chart.
Added angled value labels with horizontal bar charts.
Added configurable colors for the bar labels of selected bars.
Added floating and static data series labels for the line chart.
Added single click URL drilldown.
Added com.objectplanet.chart.ext.TimeLineChartApplet in chart.ext.jar.
Added possibility to use class name for chart types in ChartServlet.
Added a parameter to control the thousands delimiter in numerical labels.
Added right to left scrolling in the LineChart.
Added antialiased rendering of chart images for servlets.
Added PNG support for the servlet, about 10x faster than JPG.
Added setLocale() method and locale parameter to control the localized number format.

Changes from version 2.7.4 to 2.7.5

Added a Chart.displayFloatingLabel(...) method.
Fixed a bug which caused the chart applet to display as a gray box at startup sometimes.
Fixed a bug where the chart servlet could not encode non-western character encodings.
Fixed an alignment bug with the rangeLabelPrefix_2 and rangeLabelPostfix_2 parameters.
Fixed a bug which could cause inconsistent rendering of the charts at times.

Changes from version 2.7.3 to 2.7.4

The default image format generated by the servlet is now PNG (10–20x faster than JPEG).
Added format=png24 for truecolor PNG images.
Added format=jpg for JPEG generated images.
Added gridAdjustmentOn=true (in addition to top, left, bottom, right).
Added a displayVersion=true option to the applet and servlet.
Added a locale parameter to control the localized display of numbers.
Fixed a bug with the formatting of the time labels in the TimeLineChartApplet.
Fixed a bug with the cursor setting when URLs were used.
Fixed a bug where space could not be set as the thousands delimiter.
Fixed a bug where the bar labels were not reset correctly using the servlet.
Fixed a bug where overlay charts were not repainted if its ChartData was changed.
Fixed a nullpointer exception when using detached slices in the pie chart applet.
Fixed a bug with pie chart legend selection occurring in some situations.
Fixed a bug with negative floating value labels in stacked bar charts.

Changes from version 2.7.2 to 2.7.3

Fixed a bug with the servlet which caused empty chart images to be returned.

Changes from version 2.7.1 to 2.7.2

Fixed a bug where angled value/sample/series labels did not work for horizontal bars.
Fixed a bug where the labelDelimiter parameter was not read correctly every time.

Changes from version 2.7 to 2.7.1

Fixed a bug where floating labels did not paint correctly for bar charts.
Changed the misspelled thousandsDelimeter parameter with thousandsDelimiter.
Changed the misspelled set/getThousandsDelimeter() with set/getThousandsDelimiter().
Added thousandsDelimiter=off to turn off thousands grouping.
Fixed a bug where the dataInterval parameter would fail in the TimeLineChartApplet.

Changes from version 2.7rc1 to 2.7

Added a dataInterval parameter to load data from a URL at intervals.
Added a timeLabels parameter in the TimeLineChartApplet.
Added a autoTimeLabelsOn parameter in the TimeLineChartApplet.
Fixed a bug where space+\n did not work at the beginning of multiline labels in applets.
Fixed a memory leak when an applet page was reloaded or revisited.
Fixed a bug where anchor type URLs (#anchor) did not work.

Changes from version 2.7pre2 to 2.7rc1

Added setRightToLeftScrollingOn(true/false) for the line chart.
Added antialias=true for the ChartServlet.
Added a Chart/ChartData.appendSampleLabel() method.
Removed IllegalArgumentExceptions from some getter methods.
Deprecated the String[] getStringValues(String string) method in ChartApplet.
Added String[] getStringValues(String string, String delimiter) in ChartApplet.
Added a callJavaScript(String name) method in ChartApplet.
Added possibility to use class name for chart time in ChartServlet.
Fixed a bug with ChartSample.hasValue() which did not work for Double.NaN values.
Fixed a bug with ChartData.set/getSampleValues() which did not work for Double.NaN values.
Fixed a bug with ChartData.getSampleValue() which returned 0 instead of Double.NaN.
Fixed a bug with Chart/ChartData.appendSampleValue() which moved all the sample labels.
Fixed a bug with getLowerRange() which returned a long value instead of double.
Fixed a bug where lineWidth=0 did not work.
Fixed a bug which caused memory and resource leakage with servlets.
Fixed a bug which caused a too-many-images exception in Internet Explorer when using many angled labels.
Fixed a bug where floating labels for overlay charts did not work.
Fixed a bug where sample selections for overlay charts did not work.
Fixed a bug with the placement of multiline legend labels.
Fixed a bug where numbers were not formatted correctly with the currently set locale.
Fixed a bug where line breaks at the beginning or end of a label did not work.
Fixed a bug where the bars and lines were not recalculated when using servlets.
Fixed a bug where stacked bars did not work with the second y-range.
Fixed a bug where the first or second point of a line did not paint sometimes.
Fixed a bug with misaligned labels in 3D line charts.
Fixed a bug which caused the pie chart to paint undefined values (Double.NaN) incorrectly.
Fixed a bug where absolute URLs (starting with /) did not work correctly.
Fixed a bug where font parameters did not work for overlay charts.
Fixed a bug where the cursor was not set correctly in JDK 1.4.
Fixed a bug with the data parameter in servlets if the script also had parameters.

Changes from version 2.7pre1 to 2.7pre2

Added <param name=rangeLabelPrefix_2 value=label> for the bar and line chart.
Added <param name=rangeLabelPostfix_2 value=label> for the bar and line chart.
Added <param name=rangeLabelsOff_2 value=true/false> for the bar and line chart.
Added Chart.setGridAdjustmentOn(Chart.TOP/RIGHT/BOTTOM/LEFT, true/false).
Added <param name=singleClickURLOn value=true> for single click drilldown.
Added data=url parameter in the ChartServlet.
Added <param name=thousandsDelimiter value=",">.
Added com.objectplanet.chart.ext.TimeLineChartApplet for time charts.
Fixed a bug which made one label repeat itself when using many similar angled labels.
Fixed a bug with value lines where not all the lines were painted at some occasions.
Fixed a bug where floating labels did not work for overlay charts.

Changes from version 2.6 to 2.7pre1

Added overlay charts for servlets.
Added <param name=data value=url> in the ChartApplet.
All label styles are now Chart.OUTSIDE, Chart.INSIDE, Chart.FLOATING, Chart.BELOW, or Chart.BELOW_AND_FLOATING.
Implemented angled value labels for horizontal bar charts.
Added Chart.forceRepaint() to avoid some repainting problems when using JavaScript.
Added Chart.loadImage(String name) to load an image from the disk.
Added Chart.setSampleLabelSelectionColor(Color color).
Added <param name=sampleLabelSelectionColor value=color> to the bar chart applet.
Added LineChart.setSampleLabelStyle(Chart.BELOW_AND_FLOATING).
Added LineChart.setSeriesLabelStyle(Chart.FLOATING/OUTSIDE).
Added PieChart.setInsideLabelColor(int pieIndex, Color color).
Added the possibility to use the Bar/Pie/LineChartApplet within other applets.
Fixed a bug that caused EasyCharts fail when using the PJA library.
Fixed a bug where overlay charts did not repaint correctly when changed at runtime.
The pie chart is now rendered solid instead of hollow.
Fixed a bug in the pie chart where a space between slices sometimes occurred.
Fixed a bug in PieChart where percent and value labels were displayed for empty samples.
Fixed a bug where the ChartServlet output type was not set correctly.
NOTE: The encodeChartImage(Image image, OutputStream out) method in ChartServlet changed signature to encodeChartImage(Image image, OutputStream out, ServletResponse res). Please recompile your custom servlet programs.

EasyCharts 2.6 — New Features Summary

Added a 3D depth parameter in the bar and line chart.
Added vertical grid lines in the bar and line chart.
Added configurable colors for the legend boxes.
Added configurable images for the legend entries.
Added configurable images for the sample points in the line chart.
Added floating labels in line chart.
Added URLs (drilldown) per sample point in the line chart.
Added the possibility to use Graphics2D objects.
Added bar outline color parameter.

Changes from version 2.6pre2 to 2.6

Added setDefaultGridLinesOn() and setDefaultGridLinesColor() to control default grid lines.
Removed setGridLinesOn() added in 2.6pre1 — use setGridLines() which turns on grid lines automatically.
Fixed a bug in BarChart where very short bars could not be selected.
Fixed a bug where range labels were not properly formatted in Sun Java/Netscape when using decimal count more than 0.
Fixed a bug where the chartClass parameter did not work.
Fixed a bug where the doubleBufferingOff parameter did not work.
Fixed a bug in LineChart where the last selected line was not painted on the top of the others.
Fixed a bug where setRelativeRange() for overlayed charts with multiple series was not working properly.

Changes from version 2.6pre1 to 2.6pre2

Added a set3DDepth() method to BarChart and LineChart to control the 3D depth effect.
Added <param name=3DDepth value=int> parameter to BarChartApplet and LineChartApplet.
Chart.addOverlayChart(Chart) now returns the index of the chart added.
Added Chart.setOverlayChart(index, chart), Chart.setOverlayChartOn(index, onoff), Chart.removeOverlayChart(index).
Added Chart.setExternalGraphics() to be able to use Graphics2D graphics objects and antialiasing.
Added BarChart.setBarOutlineColor() and <param name=barOutlineColor value=color>.
The image format produced by the ChartServlet was changed from GIF to JPEG due to Unisys patent. GIF images can still be generated with a third-party GifEncoder.
Added ChartServlet.encodeImage() that can be overridden by subclasses to generate other image formats.
Fixed a bug where an overlayed chart did not adjust its range to the base chart's range.
Fixed a bug where target lines were not painted when too close to the chart grid.
Fixed the memory leak when using angled labels in Internet Explorer.
Fixed a bug where angled labels had an incorrect background on Windows NT/Internet Explorer in true color.
Fixed a bug where an overlay chart on a 3D base chart did not paint correctly.
Fixed a bug where lines with endpoints far outside the chart grid were painted as horizontal and vertical lines.
Fixed a bug where Double.NaN values were painted as a square in the line chart.
Fixed a bug in PieChart where the inside labels did not move with detached slices.
Fixed a bug in PieChart where a detached slice was not selected correctly.
Fixed a bug where floating labels did not appear when mouse was over very small 3D bars.
Fixed a bug where only the front of a 3D bar was highlighted when selecting it.
Fixed a bug where the floating value labels did not appear correctly in 3D line charts.
Fixed a bug where the servlet would not run on some servers (such as Apache JServ).
Fixed a bug where overlay charts were painted in the back side of a parent chart on a 3D base.

Changes from version 2.5.3 to 2.6pre1

Added vertical grid lines for the bar and line chart.
Chart.setGridLinesOn(boolean on), Chart.setGridLines(double[] grid), Chart.setGridLine(int index, double value).
Chart.setSampleAxisRange(double start, double stop), Chart.setGridColor(Color color), Chart.setGridLineColors(Color[] colors).
Added <param name=gridLinesOn value="true"> and <param name=gridLines value="10,20,30,40,50">.
Added configurable colors for the legend boxes.
Chart.setLegendColors(Color[] colors), Chart.setLegendColor(int index, Color color).
Added configurable images for the legend entries.
Chart.addImage(String name, Image image), Chart.setLegendImage(int index, String image).
Added floating labels per sample point in the LineChart.
LineChart.setSampleLabelStyle(BELOW|FLOATING), LineChart.setValueLabelStyle(FLOATING), LineChart.setSeriesLabelsOn(boolean).
Added url connections per sample point in the LineChartApplet.
<param name=url_N_M value="url.html">, <param name=urltarget_N_M value="_self">.
Added configurable images for the sample highlights via Chart.setLegendImage().

Changes from version 2.5.2 to 2.5.3

Fixed a bug where a square background appeared behind angle labels.
Fixed a bug where the pie chart went into an infinite loop when painting pies with 0 or negative size.
Fixed a bug where bar labels shifted downwards when a negative bar with an inside label came close to the chart grid bottom.
Fixed a bug where value labels inside stacked bars were displayed even when there was not enough space.

Changes from version 2.5.1 to 2.5.2

Fixed a bug where a line chart overlaying a bar chart did not line up correctly with the bars.
Fixed a bug where the legend occasionally threw a null pointer exception when run on UNIX without X.
Fixed a bug with the autolabelspacing where the labels came too close to each other.
Fixed a bug where a tick mark was painted with empty sample labels in the line chart.
Fixed a bug where 3D lines sometimes were cut off.

Changes from version 2.5 to 2.5.1

Fixed a bug where a chart was printed as a bitmap resulting in low resolution printouts.
Added a printAsBitmap parameter and setPrintAsBitmap() method to work around printing problems on some browsers/VMs.
Fixed a bug where the chart was not correctly repainted after changing the data directly in the ChartData class.
Added a hasChangedSince() method in the ChartData class.
Fixed a bug where the chart did not repaint correctly when resized.

Changes from version 2.5pre4 to 2.5

Documentation and examples added.

Changes from version 2.5pre3 to 2.5pre4

Added overlay charts.
Chart.addOverlayChart(Chart) was added.
Parameter overlay was added to Bar/Line/Pie applets.
Added a ChartApplet.setParameterPrefix() method.

Changes from version 2.1pre2 to 2.5pre3

Added angled labels.
BarChart: setLabelAngle("barLabelAngle", angle), setLabelAngle("valueLabelAngle", angle), setLabelAngle("rangeAxisLabelAngle", angle), setLabelAngle("sampleAxisLabelAngle", angle).
LineChart: setLabelAngle("sampleLabelAngle", angle), setLabelAngle("valueLabelAngle", angle), setLabelAngle("rangeAxisLabelAngle", angle).
Applets: valueLabelAngle, rangeAxisLabelAngle, rangeAxisLabelAngle_2, barLabelAngle (Bar), sampleAxisLabelAngle (Bar), sampleLabelAngle (Line).
Added double y-axis.
Chart.setRangeOn(int index, boolean on), Chart.setRangePosition(int index, int position), Chart.setRangeColor(int index, Color color).
Chart.setRange(int index, range), Chart.setLowerRange(int index, range), Chart.setRelativeRange(int index, double range, double step).
Chart.setSeriesRange(int series, int range), Chart.setRangeDecimalCount(int index, int count).
Applets: rangeDecimalCount_2, rangeAxisLabel_2, rangeOn_2, range_2, lowerRange_2, rangeStep_2, rangePosition, rangeColor, rangeAdjusterOn_2, rangeAdjusterPosition, rangeAdjusted, seriesRange_N, sampleDecimalCount_N, valueLabelsOn_N.
Due to double y-axis, several method pairs were deprecated — use indexed versions (e.g. setRange(0, range) instead of setRange(range)).

Changes from version 2.1pre1 to 2.1pre2

Added line width per data series in the linechart.
Added a ChartServlet with GIF generation.
Added line wrapping for chart labels.
Added seriesLabelsOn/seriesLabelStyle parameter in the pie chart.
Added a setVisibleSamples() method to display a subset of the samples.
Moved the range axis label to the side of the axis.

Changes from version 2.0 to 2.1pre1

Sample scroller added to the line chart.
Sample scroller added to the bar chart.
Range adjuster added to the bar chart.
Static value, percent, and sample labels added to the pie chart.

Changes from version 2.04 to 2.05

Added getLastSelectedSample() and getLastSelectedSeries() methods.
Added setCurrentRange() and setCurrentLowerRange() to set the range of the range adjuster in the bar and line chart.

Changes from version 2.03 to 2.04

Added a parameter to connect two sample points with undefined values between them in the line chart — <param name=connectedLinesOn value=true> / setConnectedLinesOn(int serie, boolean on).

Changes from version 2.02 to 2.03

Fixed a bug where stacked bars were not displayed correctly when you had larger-than-zero lower ranges.

Changes from version 2.01 to 2.02

You can now control the space between the chart grid and the chart component edges.
Chart: Added a setGraphInsets(top, left, bottom, right) method.
ChartApplet: Added a graphInsets parameter.

Changes from version 2.0 to 2.01

Now using a hand cursor when the mouse is over a sample with a URL associated with it (drilldown).
BarChart: Added a setMultiSeriesOn(boolean) method.
BarChartApplet: Added a multiSeriesOn parameter.
Chart: The getSelectedObjects() method was implemented.
Various bug fixes.

EasyCharts 2.0 — New Features Summary

Chart: Added a setLegend(String[]) method, prefix and postfix to the value labels, setAutomaticRepaintOn(boolean); the frame around the chart was removed.
BarChart: Added value/range label prefix/postfix, sample axis and range axis labels, setBarLabels(String[]) method, more fonts.
BarChartApplet: sampleN_values renamed to sampleValues_N. Added value/range label prefix/postfix, sample/range axis labels, more font parameters, legendLabels parameter, doubleBufferingOff parameter. Removed targetValueLineCount.
LineChart: Added 3D and stacked lines, setLineWidth(int), per-series line control, updated range adjuster, value/range label prefix/postfix, sample axis and range axis labels.
LineChartApplet: Added stackedOn, targetValueLines, rangeStep, maxValueLineCount, legendLabels, lineWidth, valueLabelStyle, sampleHighlightStyles.
PieChart: Added value label prefix/postfix, multiple pies per chart, setSelectionStyle(int), setPieSeperatorOn(boolean), setDetachedSlice().
PieChartApplet: Added pieLabelsOn, sliceSeperatorOn, sliceSeperatorColor, selectionStyle, pieLabelFont, legendLabelFont, floatingLabelFont, detachedDistance, detachedSlices.
ChartData: All chart data are now stored in the ChartData class; Chart.setChartData(ChartData) was added.
BarChart: Added stacked and side-by-side bars with multiple series, setBarType(), setBarWidth(), setValueLabelStyle().
BarChartApplet: Added barType parameter (side or stacked), valueLabelStyle parameter (outside or inside).
Applet: sampleN_url renamed to url_N; sampleN_urltarget renamed to urltarget_N; title renamed to chartTitle.
A number of deprecated methods were marked for removal in 2.1.

Changes from version 1.7 to 1.7.1

Added JavaScript support.
BarChartApplet: Added a setParameter("name", "value") method; the chart variable was made public.
PieChartApplet: Added a setParameter("name", "value") method; the chart variable was made public.
LineChartApplet: Added a setParameter("name", "value") method; the chart variable was made public.
LineChart: Added getSampleHighlightSize() and isSampleHighlightFilled() methods.
Fixed some bugs.

Changes from version 1.6 to 1.7

Added a drilldown feature and sample URL connections to the chart applets.
LineChart now supports value labels and line point highlighting.
The chart applets can now be extended and the internal chart can be replaced by another chart class.
All sample/bar labels in linechart and barchart are now painted even if they overlap — use autoLabelSpacingOn to paint only labels there is space for.
All chart applets can now be refreshed automatically to avoid repaint problems (use the automaticRefreshTime parameter).
Chart: formatNumber() method, automaticRefreshTime parameter, sampleN_url/sampleN_urltarget parameters.
LineChart: setSampleHighlightOn(), setSampleHighlightStyle(), setRangeLabelsOn(), appendSampleValue() return index, setSeriesLineOn(), setAutoLabelSpacingOn().
LineChartApplet: sampleHighlightOn, sampleHighlightStyle, sampleHighlightSize, rangeLabelsOff, autoLabelSpacingOn, seriesLineOff, chartClass.
BarChart: setAutoLabelSpacingOn(), setBarOutlineOn(), setRangeLabelsOn().
BarChartApplet: barOutlineOff, rangeLabelsOff, autoLabelSpacingOn, chartClass.
ChartSample: hasValue() and clearValue() methods.
Chart applets can now read null values from applet tags (e.g. sampleValues="1, , ,3").
Chart applets do not throw exceptions anymore, but print an error message in the console instead.
Bugs were fixed and the library was made more robust.

Changes from version 1.5.1 to 1.6

ChartApplet: Added font, titleFont, sampleLabelColors param tags.
BarChartApplet: Added barOutlineOn, valueLinesColor, rangeLabelsOn param tags.
LineChartApplet: Added rangeLabelsOn param tag.
Chart: Fixed a problem with the font size of the chart title overwriting the chart if too big.
Chart: Implemented setSample(index, ChartSample) and setSamples(ChartSample[]) methods.
Chart: set/getSample methods now throw IllegalArgumentException.
BarChart, LineChart: Removed deprecated methods.

Changes from version 1.5 to 1.5.1

BarChart: Added setBarOutlineOn(boolean) to turn on/off the bar frame outline.
BarChart: Fixed a bug where the bars were not painted all the way to the end when there were many bars.
BarChart: Fixed a bug where bar labels were painted on top of each other — now only paints as many labels as there is room for.
LineChart: Fixed a problem where a line was not correctly painted if some samples were missing for that series.
LineChart: Fixed a problem where values equal to the upper or lower range were not displayed.

Changes from version 1.4 to 1.5

Support for JDK 1.0.2 was added in addition to 1.1 and 1.2.
The package com.objectplanet.chart102 includes charts for JDK 1.0.2.
ChartSample: Added formatNumber(double value, int decimals) method for formatting floating point numbers.
Numbers are now formatted European style (space as thousands separator) instead of commas.
Chart: Fixed a bug in getFloatMaxValue() and getFloatMinValue() — now return 0 if no samples are found.
LineChart: Fixed a bug in setSampleColors(Color[] colors) that always caused the third color to be overwritten.

Changes from version 1.3.3 to 1.4

You can now add value lines at any value in BarChart and LineChart.
BarChart/LineChart: Added setTargetValueLine(String id, double value, Color color, int style), getTargetValueLine(String id), getValuePosition(double value), setRangeLabelsOn(boolean on), isRangeLabelsOn().
BarChart/LineChart: Added TARGET_LINE_NO_LABEL, TARGET_LINE_ID_LABEL, TARGET_LINE_VALUE_LABEL, TARGET_LINE_ID_AND_VALUE_LABEL styles.
BarChart: Added appendSample(double value, boolean makeSpace).
LineChart: Added appendSample(int serie, double value, boolean makeSpace).
LineChart now stops drawing a line if the current number of values in a series is less than the total number of samples.
LineChart.getFloatMaxValue() and getFloatMinValue(): Fixed bugs that prevented getting max/min values near zero.
LineChart: A selected line is now drawn much more clearly.
Chart.setSampleValues(double[] values) now keeps the original number of samples.
Chart: Fixed a bug in setSampleCount() that removed the last value in the original samples.
PieChart: Added setSampleLabelsOn(boolean) and isSampleLabelsOn().
PieChartApplet: Added a sampleLabelsOn parameter tag.

Changes from version 1.3.2 to 1.3.3

BarChart: Rectangle getGraphBounds() was made public.
LineChart: Rectangle getGraphBounds() was made public.
PieChart: A Rectangle getGraphBounds() was added.
LineChart: Fixed a bug in setSampleCount() and setSampleSeries() that caused a runtime error after calling these methods.

Changes from version 1.3.1 to 1.3.2

LineChart: Added setSeriesLabels(String[] labels), getSeriesLabels(), getSeriesLabel(int serie).

Changes from version 1.3 to 1.3.1

Methods were added to LineChart to set/get series samples.
LineChart: getSamples(int serie), getSample(int serie, int index), getSampleValues(int serie), getFloatSampleValues(int serie), getSampleValue(int serie, int index), getFloatSampleValue(int serie, int index).
Version information was added to the charts.
Chart: Added static String getVersion().
Chart: Running java com.objectplanet.chart.Chart will display the version number.

Changes from version 1.2 to 1.3

Negative number support was added for the BarChart and LineChart.
BarChart: BarChart(int count, double range, double lowerRange) constructor; setLowerRange(double), getLowerRange(), getFloatLowerRange(), setLowerRelativeRange(double).
BarChartApplet: Added a lowerRange parameter tag.
LineChart: LineChart(int seriesCount, int sampleCount, double range, double lowerRange) constructor; setLowerRange(double), getLowerRange(), getFloatLowerRange(), setLowerRelativeRange(double).
LineChartApplet: Added a lowerRange param tag.
Chart: Added getMinValue() and getFloatMinValue().
BarChart: setBarAlignment() now throws IllegalArgumentException for illegal alignment parameters.
Chart: setLegendPosition() now throws IllegalArgumentException for illegal position parameters.

Changes from version 1.1 to 1.2

Floating point number support was added — setSample() methods take double instead of long; added setSampleValues(double[]), getFloatSampleValues(), getFloatSampleValue(int), setSampleDecimalCount(int), getFloatMaxValue().
BarChart: setRange(long) changed to setRange(double); old setRange(double) renamed to setRelativeRange(double). Added getFloatRange(), setRangeDecimalCount(int), getRangeDecimalCount().
LineChart: setSampleValues(int index, double[]), setRange changed to setRange(double), setRelativeRange(double), getFloatRange(), setRangeDecimalCount(int), getRangeDecimalCount().
PieChart: Added setPercentDecimalCount(int) and getPercentDecimalCount().
Applets: rangeDecimalCount (Bar/Line), percentDecimalCount (Pie) param tags added.
Configurable sample colors: setSampleColors(Color[]), getSampleColors(), setSampleColor(int, Color), getSampleColor(int). BarChart setBarColor()/getBarColor() and LineChart setLineColor()/getLineColor() were deprecated in favor of setSampleColor().
ChartApplet: Added sampleColors param tag; LineChartApplet lineColor param tag was removed.
Chart: Made lightweight (usable with Swing), removed double buffering.
Added NonFlickerPanel class to avoid flickering when updating charts frequently.
Chart: Fixed printing in applications; fixed legend placement bug when placed on top; replaced assertion windows with IllegalArgumentException.
BarChart: Fixed several bugs in sizing and placement when different features are turned on and off.
LineChart: Lines are now 1 pixel wide when unselected and 2 pixels wide when selected.
PieChart: Added getPercentValue(int index).

Changes from version 1.0 to 1.1

The BarChartApplet and LineChartApplet now adjust their range to the maximum value by default, if no explicit range is set.
Added setTitleFont() and getTitleFont() methods.

If you have any questions, comments, bug reports, or feature requests please contact us or visit the online help desk.