int dim2 = top - yCombobox.getSelectedIndex();
int dim3 = top - zCombobox.getSelectedIndex();
pcaModel.updateRcView(dim1, dim2, dim3);
int dim2 = top - yCombobox.getSelectedIndex();
int dim3 = top - zCombobox.getSelectedIndex();
pcaModel.updateRcView(dim1, dim2, dim3);