func AddPoints(ih *iup.Ihandle, index int, x, y []float64) {
count := len(x)
cX := float64ArrayToC(x)
cY := float64ArrayToC(y)
C.IupPPlotAddPoints(ih.C(), C.int(index), &cX[0], &cY[0], C.int(count))
}
func (h *IupPPlot) InsertAddPoints(index int, x, y []float32) {
count := len(x)
if len(x) > len(y) {
count = len(y)
}
C.IupPPlotAddPoints(toNative(h), C.int(index), (*C.float)(unsafe.Pointer(&x[0])), (*C.float)(unsafe.Pointer(&y[0])), C.int(count))
}