# demo custom renderer. This takes a ds[n,4] and plots dots # with each record: [x,y,rad,color] # Note, the plan is to redo how custom renderers are done, so this may change. from org.virbo.dataset import SemanticOps from org.das2.graph import Renderer import java from java.lang import IllegalArgumentException cb= dom.plots[0].zaxis.controller.getDasAxis() dom.plots[0].zaxis.visible= True class MyPCL( java.beans.PropertyChangeListener ): def propertyChange(self,e): dom.plots[0].controller.dasPlot.invalidateCacheImage() cb.addPropertyChangeListener( MyPCL() ) #TODO: there's a jython way to do this class MyRend( Renderer ): def render( self, g, xAxis, yAxis, mon=None ): ds= self.getDataSet() if ( ds.rank()!=2 or ds.length(0)!=4 ): self.getParent().postException( self, IllegalArgumentException( "dataset is not ds[n,4]" ) ) return xds= ds[:,0] yds= ds[:,1] rds= ds[:,2]/2 cds= ds[:,3] xu= SemanticOps.getUnits( xds ) yu= SemanticOps.getUnits( yds ) cu= SemanticOps.getUnits( cds ) ru= SemanticOps.getUnits( rds ) for i in xrange( yds.length() ): x= xAxis.transform( xds.value(i), xu ) y= yAxis.transform( yds.value(i), yu ) g.setColor( Color( cb.rgbTransform( cds.value(i), cu ) ) ) x2= xAxis.transform( xds.value(i)+rds.value(i), xu ) - x g.fillOval( int(x-x2/2),int(y-x2/2),int(x2/2),int(x2/2) ) dom.plots[0].controller.dasPlot.removeRenderers() ds= randn( 1000,4 ) r= MyRend() r.setDataSet(ds) dom.plots[0].controller.dasPlot.addRenderer( r ) dom.plots[0].xaxis.range= DatumRangeUtil.parseDatumRange('-5 to 5') dom.plots[0].yaxis.range= DatumRangeUtil.parseDatumRange('-5 to 5') dom.plots[0].zaxis.range= DatumRangeUtil.parseDatumRange('0 to 3')