#8019: rendering a plot changes its dimensions [was: graphics_array messes up
dimensions of plots]
---------------------------+------------------------------------------------
Reporter: pdehaye | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.2
Component: graphics | Keywords: axes_range, axes_pad
Author: Paul Dehaye | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by pdehaye):
* keywords: graphics_array, scale => axes_range, axes_pad
* priority: minor => major
Old description:
> The following code should illustrate this, see picture below, everything
> gets scaled for no reason.
>
> {{{
> graph = circle((0,0),20)
> graph.set_aspect_ratio(1)
> graph2 = graphics_array([[graph]*4]*4)
> graph2.show()
> }}}
New description:
The following code should illustrate this, see picture below, everything
gets scaled for no reason.
{{{
graph = circle((0,0),20)
graph.set_aspect_ratio(1)
graph2 = graphics_array([[graph]*4]*4)
graph2.show()
}}}
The real reason is that axes_pad<>0 will affect the same picture every
time it's rendered (to be saved or displayed), and change its dimensions
by 2% each time by default. I can understand the need for axes_pad, but
don't think this should happen:
{{{
graph = circle((0,0),20)
graph.show()
print graph.get_axes_range()
graph.save('test.png')
graph.save('test.png')
graph.save('test.png')
graph.save('test.png')
graph.save('test.png')
print graph.get_axes_range()
graph.show()
}}}
and compare with
{{{
graph = circle((0,0),20)
graph.show(axes_pad=0)
print graph.get_axes_range()
graph.save('test.png',axes_pad=0)
graph.save('test.png',axes_pad=0)
graph.save('test.png',axes_pad=0)
graph.save('test.png',axes_pad=0)
graph.save('test.png',axes_pad=0)
print graph.get_axes_range()
graph.show(axes_pad=0)
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8019#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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