Thread: [matplotlib-devel] axis('equal')

Hi list
Is there any voodoo applying axis('equal')? 
I have tried and it does not equalise the x and y
scales 
There is a 'TODO'
Michael
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Hi,
I have submitted a bug report
1591708 pylab.axis('equal') scales wrong axis
In the attached script axis('eqaul') shrink x instead of expanding y with 
the result that no
datapoints are seen.
I have also submitted a simple patch
1591716 Expand y if data don't fit into x_lim
It would be great if someone could take look.
It fixes the test case, but I'm not sure if it is the right way to do it.
regards
Ulf Larsson
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Ulf,
Thanks for the report. I will check it out and either apply your patch 
or some other fix.
Your message along with several others that were sent days ago popped up 
just now in my inbox. It seems like there are some strange delays in 
the sourceforge mailing list system.
Eric
Ulf Larsson wrote:
> Hi,
> 
> I have submitted a bug report
> 1591708 pylab.axis('equal') scales wrong axis
> In the attached script axis('eqaul') shrink x instead of expanding y 
> with the result that no
> datapoints are seen.
> 
> I have also submitted a simple patch
> 1591716 Expand y if data don't fit into x_lim
> It would be great if someone could take look.
> It fixes the test case, but I'm not sure if it is the right way to do it.
> 
> regards
> Ulf Larsson
> 
> _________________________________________________________________
> FREE pop-up blocking with the new MSN Toolbar - get it now! 
> http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
> 
> 
> ------------------------------------------------------------------------
> 
> import pylab
> 
> x_data = [6.8538697159586812, 
> 6.8906683229002512, 
> 6.8495854795623092, 
> 6.887510586105912, 
> 6.8464139392062178, 
> 6.8830008172676411, 
> 6.8424628962958414, 
> 6.8810049485591289]
> 
> y_data = [5.6629566741871935, 
> 5.6584471730561399, 
> 5.6629080444545945, 
> 5.6581494452612304, 
> 5.6630169070389558, 
> 5.659139916088753, 
> 5.6629980013160068, 
> 5.6581262160214072]
> 
> pylab.figure()
> pylab.plot(x_data, y_data, '+')
> pylab.grid(1)
> pylab.axis('equal')
> pylab.show()
> 
> 
> 
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>>>>> "Michael" == Michael Nandris <sui...@ya...> writes:
 Michael> Hi list Is there any voodoo applying axis('equal')?
Are you working with the latest CVS -- Mark Bakker has recently been
working on this function and made substantial improvements. See for
example, examples/axis_equal_demo.py.
JDH