Re: [Matplotlib-users] controlling aspect ratio

[Cory D. <cd...@st...>]

Hi there,
I'm not suggesting that this is a good way to to so, but it works (the
last time I tried). Hope this helps.

def setDataAspectRatioByFigSize(ax,r):
    """Same idea as matlab.  Adjusts the figure size to fix the aspect
ratio"""
    xlim=ax.get_xlim()
    dxlim=xlim[1]-xlim[0]
    ylim=ax.get_ylim()
    dylim=ylim[1]-ylim[0]
    pos=ax.get_position()
    dxpos=pos[2]
    dypos=pos[3]
    f=gcf()
    figsize=f.get_size_inches()
    dxfig=figsize[0]
    dyfig=dylim*dxpos*dxfig/r/dypos/dxlim
    f.set_figsize_inches(dxfig,dyfig)

def setDataAspectRatioByAxisPos(ax,r):
    """Same idea as matlab.  Adjusts the axis position to fix the aspect
ratio"""
    xlim=ax.get_xlim()
    dxlim=xlim[1]-xlim[0]
    ylim=ax.get_ylim()
    dylim=ylim[1]-ylim[0]
    pos=ax.get_position()
    dxpos=pos[2]
    dypos=pos[3]
    centreypos=pos[1]+0.5*dypos
    f=gcf()
    figsize=f.get_size_inches()
    dxfig=figsize[0]
    dyfig=figsize[1]
    dypos=dylim*dxpos*dxfig/r/dyfig/dxlim
    ax.set_position([pos[0],centreypos-0.5*dypos,dxpos,dypos])

Cheers,
Cory




On Mon, 2004-11-01 at 16:02, Jochen Voss wrote:
> Hello,
> 
> I would like to (mis-)use matplotlib to draw some things which
> are not graphs of functions.  For this it would be nice to
> be able to fix the aspect ratio of the figure to 1.  What is
> a good way to do so?
> 
> Jochen
-- 
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Cory Davis
Meteorology
School of GeoSciences
University of Edinburgh
King's Buildings
EDINBURGH EH9 3JZ

ph: +44(0)131 6505092
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