Subplots with Gnuplot: Two y-axes?

[Martin Kunz]

Hi,

I would like to create a column of three subplots where the second plot
has its y-axis on the right-hand side. Example code:

graphics_toolkit ("gnuplot");

figure(1)
clf;
hAx(1) = subplot(3,1,1);
plot(5,5);
hAx(2) = subplot(3,1,2);
plot(10:-1:1);
hAx(3) = subplot(3,1,3);
plot(10:20)
set(hAx(2),"yaxislocation","right")

For some reason the third plot has a correct y-axis on the left side,
but additionally the y-axis of the second plot on the right (see
attached screenshot). Scrolling in the third subplot vertically moves
both y-axes, so they seem to belong to one axis object, not two on top
of each other.
I cannot even find the duplicate yticklabels:

>> get (1,"children")
ans =

  -201.90
  -207.46
  -213.86
鉢>> get(get(1,"children")(1),"yticklabel")
ans =
{
  [1,1] = 10
  [1,2] = 12
  [1,3] = 14
  [1,4] = 16
  [1,5] = 18
  [1,6] = 20
}

(Note that the first child of the figure is the lowest axis object)

Is this a bug in Gnuplot? Do you have any ideas for a workaround?

I am using Octave 3.0.0-rc4 under Windows 7 with the bundled Gnuplot 4.6
binary.
Thanks for any help!
Martin

subplotAxisLocationScreenshot.png
Description: PNG image