Legend details to be re arranged

roshan012

Hi,

Request you suggest me below scenario.

Legend data is ascending order

CRITICAL
High
Low
Medium

I want to re arrange these data as

CRITICAL
HIGH
LOW
MEDIUM

HOW CAN GO WITH.

kclark

<a class='bbc_url' href='http://www.birt-exchange.org/org/devshare/designing-birt-reports/1320-alter-pie-chart-legend-order-in-script/'>This devshare</a> show's how to do it. By placing the code bellow in the onRender() of your pie chart.<br />
<br />
<pre class='_prettyXprint _lang-auto _linenums:0'>
function beforeRendering( gcs, icsc )
{
//Script reverses chart legend order
importPackage(Packages.org.eclipse.birt.chart.computation);
importPackage(Packages.java.util);
importPackage(Packages.java.lang);


var llh = gcs.getRunTimeContext().getLegendLayoutHints();
//current legend
var liha = llh.getLegendItemHints( );
//new legend construct
var nliha = java.lang.reflect.Array.newInstance(LegendItemHints, (liha.length));

if ( liha.length > 1 ){
for( idx=0; idx < liha.length; idx++ ){

var tli = liha[idx];
var oldpos = tli.getIndex();
var newpos = (liha.length-1)-idx;

var ntli = liha[newpos];

//valid legend entry
if( tli.getType() == LegendItemHints.Type.LG_ENTRY){
//create a new legend item using the the new items values
var lih = LegendItemHints.newEntry( ntli.getItemText(), ntli.getValueText(), ntli.getSeriesDefinition(), ntli.getSeries(), ntli.getIndex() );
lih.top(tli.getTop());
lih.left(tli.getLeft());
nliha[idx]=lih;
}else{
//separator
nliha[idx]=liha[idx];
}

}
}
//Create a new copy of the legend layout hints
var nllh = new LegendLayoutHints( llh.getLegendSize(),llh.getTitleSize(),null, llh.isMinSliceApplied(),llh.getMinSliceText(),
nliha );
//Update before rendering
gcs.getRunTimeContext().setLegendLayoutHints(nllh);

}
</pre>