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How to apply colors to bar series based on data

Susmitha

Hi, 
I am generating birt reports through BIRT API. I want to specify the colors of single series bar chart based on data. I see the below function (beforeDrawDataPoint) that can be used through report design in eclipse to chage the color based on data, but please let me know how can I accomplish the same using BIRT API. 
 
 
function beforeDrawDataPoint(dph, fill, icsc) 
{ 
importPackage( Packages.java.io ); 
importPackage( Packages.org.eclipse.birt.chart.model.attribute.impl ); 
 
if( dph.getBaseValue() == "Pass" ){ 
var mycolor = ColorDefinitionImpl.GREEN(); 
r = mycolor.getRed(); 
g = mycolor.getGreen(); 
b = mycolor.getBlue(); 
fill.set(r, g,

; 
} 
} 
 
 
My code is below 
 
 
public static Chart createBirtBarAndLineChart(DataSet categoryValues, DataSet[] barSeriesValues, 
Object[] barSeriesIdentifier, Object[] lineSeriesDateSet, Object[] lineSeriesIdentifierSet, 
String title, String categoryLabel, String valueLabel, 
boolean transposed, boolean isPercent, boolean showLegend, 
boolean rotateXAxisLabel, Map missionMap) { 
 
//Create chart instance 
ChartWithAxes chart = ChartWithAxesImpl.create(); 
chart.setType( "Bar Chart" ); 
chart.setSubType( "Side-by-side" ); 
chart.setTransposed(transposed); 
chart.setUnitSpacing(30); 
//chart.setDimension(ChartDimension.TWO_DIMENSIONAL_WITH_DEPTH_LITERAL); 
//Set the chart title 
chart.getTitle().getLabel().getCaption().setValue(title); 
chart.getTitle().getLabel().getCaption().getFont().setSize(12); 
chart.getTitle().getLabel().getCaption().getFont().setName("Arial"); 
//Set background color 
chart.getBlock().setBackground(ColorDefinitionImpl.WHITE()); 
chart.getPlot().getClientArea().setBackground(ColorDefinitionImpl.WHITE()); 
chart.getBlock( ).getOutline( ).setVisible( true ); 
//chart.getBlock( ).setBackground(ColorDefinitionImpl.create(0,0,255)); 
Legend lg = chart.getLegend( ); 
 
if(showLegend) { 
lg.getText( ).getFont().setSize(8); 
lg.setPosition( Position.BELOW_LITERAL ); 
//lg.setAnchor( Anchor.NORTH_LITERAL ); 
//lg.setDirection(Direction.LEFT_RIGHT_LITERAL); 
//lg.setItemType( LegendItemType.CATEGORIES_LITERAL ); 
} 
else { 
lg.setVisible(false); 
} 
 
 
//Create axes 
// X-Axis 
Axis xAxisPrimary = ((ChartWithAxes) chart).getPrimaryBaseAxes()[0]; 
xAxisPrimary.setType( AxisType.TEXT_LITERAL ); 
if(categoryValues instanceof DateTimeDataSet) { 
xAxisPrimary.setFormatSpecifier( JavaDateFormatSpecifierImpl.create( "MMM" ) ); 
} 
 
if(categoryLabel != null) { 
xAxisPrimary.getTitle().setVisible(true); 
xAxisPrimary.getTitle().getCaption().setValue(categoryLabel); 
xAxisPrimary.getTitle().getCaption().getFont().setSize(8); 
xAxisPrimary.getTitle().getCaption().getFont().setName("Arial"); 
if(transposed) { 
xAxisPrimary.getTitle().getCaption().getFont().setRotation(90); 
} 
} 
xAxisPrimary.getLabel().getCaption().getFont().setSize(8); 
xAxisPrimary.getLabel().getCaption().getFont().setName("Arial"); 
if(rotateXAxisLabel && transposed) { 
xAxisPrimary.getLabel().getCaption().getFont().setRotation(90); 
} 
 
if(rotateXAxisLabel) { 
xAxisPrimary.getLabel().getCaption().getFont().setRotation(60); 
} 
//xAxisPrimary.getOrigin( ).setType( IntersectionType.MIN_LITERAL ); 
 
 
// Y-Axis 
Axis yAxisPrimary = chart.getPrimaryOrthogonalAxis( xAxisPrimary ); 
yAxisPrimary.getMajorGrid( ).setTickStyle( TickStyle.LEFT_LITERAL ); 
yAxisPrimary.setType( AxisType.LINEAR_LITERAL ); 
yAxisPrimary.getOrigin().setType(IntersectionType.VALUE_LITERAL); 
yAxisPrimary.getOrigin().setValue(NumberDataElementImpl.create(0)); 
yAxisPrimary.setGapWidth(30); 
yAxisPrimary.getLabel().getCaption().getFont().setSize(8); 
yAxisPrimary.getLabel().getCaption().getFont().setName("Arial"); 
 
if(valueLabel != null) { 
yAxisPrimary.getTitle().setVisible(true); 
yAxisPrimary.getTitle().getCaption().setValue(valueLabel); 
yAxisPrimary.getTitle().getCaption().getFont().setSize(8); 
yAxisPrimary.getTitle().getCaption().getFont().setName("Arial"); 
 
} 
if(transposed) { 
yAxisPrimary.getOrigin().setType(IntersectionType.MAX_LITERAL); 
yAxisPrimary.setLabelPosition(Position.RIGHT_LITERAL); 
//yAxisPrimary.getLabel().setVisible(false); 
} 
 
yAxisPrimary.setPercent(isPercent); 
//Create the X series 
 
Series seCategory = SeriesImpl.create(); 
seCategory.setDataSet(categoryValues); 
 
SeriesDefinition sdX = SeriesDefinitionImpl.create( ); 
sdX.getSeriesPalette( ).shift( 0 ); 
xAxisPrimary.getSeriesDefinitions().add(sdX); 
sdX.getSeries( ).add( seCategory ); 
 
//Create the Y series 
 
SeriesDefinition sdY = SeriesDefinitionImpl.create(); 
 
Palette palette = sdY.getSeriesPalette(); 
palette.shift( -3 ); 
 
 
Iterator iter = palette.getEntries().iterator(); 
int index = 0; 
 
while(iter.hasNext()) { 
ColorDefinitionImpl fill = (ColorDefinitionImpl)iter.next(); 
 
if(index == 0) { 
//fill.set(0, 128, 255); // blue green 
if(barSeriesValues.length > 1){ 
fill.set(0, 0, 240); 
}else{ 
fill.set(210, 0, 0); 
} 
//fill.set(210, 0, 0); 
 
} 
else if(index == 1) { 
//fill.set(0, 0, 255); // blue 
if(barSeriesValues.length > 1){ 
fill.set(210, 0, 0); 
}else{ 
fill.set(0, 0, 240); 
} 
index++; 
} 
else if(index == 2) { 
//fill.set(0, 128, 128); // darker blue green 
fill.set(0, 154,0); 
index++; 
} 
else { // 
break; 
} 
} 
 
 
 
yAxisPrimary.getSeriesDefinitions().add(sdY); 
 
//sdY.getSeriesPalette().update(ColorDefinitionImpl.create(0,0,255)); 
 
for(int i=0; i<barSeriesValues.length; i++) { 
DataSet valuesDataSet = barSeriesValues; 
BarSeries bs = (BarSeries) BarSeriesImpl.create(); 
bs.setDataSet(valuesDataSet); 
bs.getLabel().getCaption().getFont().setSize( 8 ); 
bs.getLabel().getCaption().getFont().setName("Arial"); 
if(barSeriesIdentifier != null) { 
bs.setSeriesIdentifier( barSeriesIdentifier ); 
} 
sdY.getSeries().add(bs); 
} 
for(int i=0; i<lineSeriesDateSet.length; i++) { 
DataSet[] dataSet = (DataSet[])lineSeriesDateSet; 
Object[] lineSeriesIdentifier = (Object[])lineSeriesIdentifierSet; 
for(int j=0; j<dataSet.length; j++) { 
DataSet valuesDataSet = dataSet[j]; 
LineSeries ls = (LineSeries) LineSeriesImpl.create( ); 
ls.setDataSet( valuesDataSet ); 
ls.getLabel().getCaption().getFont().setSize( 8 ); 
ls.getLabel().getCaption().getFont().setName("Arial"); 
ls.setCurve( true ); 
if(lineSeriesIdentifier != null) { 
ls.setSeriesIdentifier( lineSeriesIdentifier[j] ); 
} 
sdY.getSeries().add(ls); 
} 
} 
 
return chart; 
} 
 
Please help me in solving this. I've been trying to solve this for 3days. 
 
Thanks.

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Comments

Susmitha

Hi,
can anyone please give me reply how to solve it. Thanks in advace for any help.

Thanks

Baku

Hello, did you find how to solve it ? I have the same issue.
I am using BIRT Designer 2.6.

In my case I don't have the fill.set(ColorDefinitionImpl) method, only fill.setType(int), so I don't even know how to change my serie color in the code...