public double[][] getData() {
if (model.getRowCount() > 1) {
int count = model.getRowCount() - 1;
int size = nbColToGraph;
double[][] data = new double[size][count];
int s = 0;
int cpt = 0;
for (BarGraph bar : eltList) {
if (bar.getChkBox().isSelected()) {
int col = model.findColumn((String) columnsList.getItemAt(cpt));
for (int idx = 0; idx < count; idx++) {
data[s][idx] = ((Number) model.getValueAt(idx, col)).doubleValue();
}
s++;
}
cpt++;
}
return data;
}
// API expects null, not empty array
return null;
}
