protected void redraw() {
// set styles
addCSSClasses(svgp);
// PCARunner
PCARunner<NV> pcarun = ClassGenericsUtil.parameterizeOrAbort(PCARunner.class, new EmptyParameterization());
Iterator<Cluster<EMModel<NV>>> ci = clustering.getAllClusters().iterator();
for(int cnum = 0; cnum < clustering.getAllClusters().size(); cnum++) {
Cluster<EMModel<NV>> clus = ci.next();
DBIDs ids = clus.getIDs();