c1.visible()
c1.cd(1, 1)
c1.setChartPie()
c1.setName("Pie example")
c1.valuePie("Hamburg", 1.0)
c1.valuePie("London", 2.0)
c1.valuePie("Paris", 1.0)
c1.valuePie("Bern", 1.0)
c1.update()
# new plot
c1.cd(1, 2)
c1.setName("XY example")
c1.setNameX("weeks")
c1.setNameY("density")
p1 = P1D("test 1")
p1.setColor(Color.red)
p2 = P1D("test 2")
# fill
rand = Random()
for i in range(10):
x = 4.0 * i # x-value
p1.add(i * 4, 10.0 * rand.nextGaussian())
p2.add(i * 2, 5.0 * rand.nextGaussian())
c1.add(p1)
c1.add(p2)
c1.update()