David Trem wrote:
> Hi,
> 
>  Eric, I will be happy to test your possible fix too. I have similar
> problem with autoscaling shared axes like you Mark.
> 
> David

I have committed to svn some changes to support autoscaling with shared 
axes, so please test.  I have done only very simple and cursory 
checking.  You might try reversed axes, log axes, etc.

I have not yet addressed the aspect ratio part of Mark's original post, 
below, but I think my changes have fixed the first of the two problems, 
in addition to adding autoscaling support, which I don't think we ever 
had before.

At present, autoscaling does not work with shared axes if an aspect 
ratio is specified.

Eric

> 
> Mark Bakker a écrit :
>> Thanks Eric.
>>
>> You know that this has been on my wish list for a long time.
>>
>> Let me know if I can test anything or help in any other way,
>>
>> Mark
>>
>> On Wed, Oct 22, 2008 at 10:54 AM, Eric Firing <[EMAIL PROTECTED]
>> <mailto:[EMAIL PROTECTED]>> wrote:
>>
>>     Mark Bakker wrote:
>>
>>         Hello list (especially Erik, who can fix this I hope) -
>>
>>         I have had problems with shared axes, especially when one of the
>>         axis has an aspect ratio that is set 'equal'. It has been
>>         discussed on the list before (mostly with Erik Firing), but it
>>         hasn't been fixed yet. What I want to do is have two plots. The
>>         top plot has an aspect ratio that is 'equal'. The idea is to
>>         have a contour plot in the top figure, while the bottom figure
>>         gives a cross-sectional picture of what I am plotting. This used
>>         to work well (quite some time ago), including zooming and such.
>>         But now I cannot plot it at all, let alone zoom.
>>
>>         My first problem is when I add a subplot with a shared x-axis,
>>         it changes the limits on the original x-axis. That seems to be a
>>         bug:
>>         ax1 = subplot(211)
>>         plot([1,2,3])  # Now the limits of the x-axis go from 0 to 2.
>>         subplot(212,sharex=ax1)  # Now the limits of both x-axis go from
>>         0 to 1.
>>
>>         After all, the new subplot shares the axis with the existing
>>         subplot, so why doesn't it copy the axis limits from that subplot?
>>
>>
>>     I may have the fix for this, but I need more time to check and
>>     refine it--and try to make sure that I don't break anything else in
>>     the process.
>>
>>
>>
>>         But the bigger problem occurs when I want the aspect ratio of
>>         one of the first axis to be 'equal'.
>>
>>         ax1 = subplot(211,aspect='equal')
>>         plot([1,2,3]) subplot(212,sharex=ax1)
>>
>>         The second subplot is added, but the length of the graph is not
>>         the same as for the first subplot. It also resets the xlimits to
>>         go from 0 to 1, as before, which means the first subplot becomes
>>         unreadable (it still enforces 'equal' in the first subplot by
>>         changing the limits of the y-axis). When I now change the limits
>>         on the x-axis, the aspect ratio is not equal anymore
>>
>>
>>     I will see what I can do.  There are definitely some bugs that need
>>     to be squashed.
>>
>>     Eric
>>
>>
>>         ax1.set_xlim(0,2)
>>         draw()
>>
>>         Thanks for your help. I am willing to help in testing any changes.
>>
>>         Best regards, Mark
>>
>>
>>
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