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https://issues.jboss.org/browse/JBSEAM-2275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12579863#comment-12579863
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Jess Sightler commented on JBSEAM-2275:
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The example for p:linegraph is still missing the 'key' attribute on the p:data
elements... it still doesn't work when directly copied, resulting in the above
exception.
> Document on Seam iText charting
> -------------------------------
>
> Key: JBSEAM-2275
> URL: https://issues.jboss.org/browse/JBSEAM-2275
> Project: Seam
> Issue Type: Patch
> Affects Versions: 2.0.0.GA
> Environment: JBoss 4.2.1.GA
> Reporter: Joshua Partogi
> Assignee: Norman Richards
> Fix For: 2.0.1.CR1
>
>
> Point 16.2
> 1. Write in doc to use the charting support, we need to add the
> jfreechart.jar and jcommon-*.jar in the project classpath. We can also add
> this is our build.xml
> 2. The key attribute is needed upon p:data component usage otherwise it will
> throw
> this exception java.lang.IllegalArgumentException: Null 'key' argument.
> at
> org.jfree.data.DefaultKeyedValues.setValue(DefaultKeyedValues.java:239)
> at
> org.jfree.data.DefaultKeyedValues2D.setValue(DefaultKeyedValues2D.java:337)
> at
> org.jfree.data.DefaultKeyedValues2D.addValue(DefaultKeyedValues2D.java:303).
>
> In examples, it is used in (the ones below are the fixed value):
> Barchart, Linechart, Series
>
> PieChart
> 1. Attributes:
> title ? The chart title text.
> legend ? A boolean value indicating whether or not the chart should include a
> legend. Default value is true
> is3D - A boolean value indicating that the chart should be rendered in 3D
> instead of 2D.
> labelLinkMargin - The link margin
> labelLinkPaint - The paint used for the label linking lines.
> labelLinkStroke - The stroke used for the label linking lines.
> labelLinksVisible - A flag that controls whether or not the label links are
> drawn.
> labelOutlinePaint - The paint used to draw the outline of the section labels
> labelOutlineStroke - The stroke used to draw the outline of the section
> labels
> labelShadowPaint - The paint used to draw the shadow for the section labels
> labelPaint - The color used to draw the section labels
> labelGap - The gap between the labels and the plot as a percentage of the
> plot width.
> labelBackgroundPaint - The color used to draw the background of the section
> labels. If this is null, the background is not filled.
> startAngle - The starting angle
> circular - A boolean value indicating whether whether to draw an ellipse or a
> perfect circle.
> direction - The direction for the pie segments. If value is not set
> "anticlockwise" then by default it is clockwise.
> sectionOutlinePaint - The outline paint for ALL sections (overrides list).
> sectionOutlineStroke - The outline stroke for ALL sections (overrides list).
> sectionOutlinesVisible - A flag that controls whether or not an outline is
> drawn for each section in the plot.
> baseSectionOutlinePaint - The base section outline paint
> baseSectionPaint - The base section paint
> baseSectionOutlineStroke - The base section outline stroke
> 2. Usage:
> <p:document xmlns:p="http://jboss.com/products/seam/pdf";>
> <p:piechart title="Pie Chart" circular="false" direction="anticlockwise"
> startAngle="30" labelGap="0.1" labelLinkPaint="red">
> <p:series key="Prices">
> <p:data key="2003" columnKey="2003" value="7.36" />
> <p:data key="2004" columnKey="2004" value="11.50" />
> <p:data key="2005" columnKey="2005" value="34.625" />
> <p:data key="2006" columnKey="2006" value="76.30" />
> <p:data key="2007" columnKey="2007" value="85.05" />
> </p:series>
> </p:piechart>
> </p:document>
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