plotyy leaves remains on future graphs

[Tom Wright]

Hi all

I've recently found the plotyy function in Octave 3.0.0 and it appears to
have some strange behaviour: once I've created one plot with plotyy, that

x=[1:10];
y=rand(size(x));
z=rand(size(x))*10;
plotyy(x,y,x,z);

# Works as expected

q=rand(size(x))*100;
plotyy(x,y,x,q);

# Has both the z and the q values and axes on the graph

plot(x,y)

# Has an inner set of axes, with z and q values on it.

Am I setting up or using this function wrong, or is this a genuine bug?

Thanks!

[David Bateman]

Post by Tom Wright
Hi all
I've recently found the plotyy function in Octave 3.0.0 and it appears to
have some strange behaviour: once I've created one plot with plotyy, that

x=[1:10];
y=rand(size(x));
z=rand(size(x))*10;
plotyy(x,y,x,z);

# Works as expected

q=rand(size(x))*100;
plotyy(x,y,x,q);

# Has both the z and the q values and axes on the graph

That should clear the original plot, and so yes you've found a bug.

Post by Tom Wright

plot(x,y)

# Has an inner set of axes, with z and q values on it.

That is as expected, as plotyy is a figure is two overlapping plots. The
final plot command replaces the first of these figures.

Post by Tom Wright
Am I setting up or using this function wrong, or is this a genuine bug?

No its a real bug. Please send a bug report to ***@octave.org so I won't
forget to fix it..

D.

[Tom Wright]

Post by David Bateman
forget to fix it..

Oops, sent it instead to ***@bugs.debian.org (I just used reportbug out
of habit) so I expect it'll be coming your way shortly.