Hello,

I can confirm and extend this bug report.  The axvline also moves to the
wrong position on resizing the matplotlib display window (Mac OS X 10.5.5,
Python 2.5.1, Matplotlib 0.98.3).

Thanks



João Luís Silva-2 wrote:
> 
> Hi,
> 
> A vertical line on the x axis of a semilogy plot will be in the correct 
> position, but when saved with the save button of the toolbar it will be 
> placed in an incorrect position, although savefig will do the right 
> thing. Furthermore, zooming will not move the axvline correctly.
> 
> Matplotlib version: 0.98.3
> 
> Example script:
> -----------------------------------------
> 
> import matplotlib.pyplot as pl
> import numpy as np
> 
> x = np.linspace(0.0,1.0,100)
> 
> pl.semilogy(x,x**2)
> pl.axvline(x=0.5,ls='--',color='k')
> pl.show()
> #pl.savefig("saved_image.png")
> -----------------------------------------
> 
> image.png was saved using the toolbar, saved_image.png using savefig.
> 
> Regards,
> João Silva
> 
>  
>  
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