matplotlib-users

[Matplotlib-users] semilog, exponents, and eps

[Darren D. <dd...@co...>]

Hi,

I am reporting a minor bug. I noticed that if I change the ticklabel size to 
10, draw a semilogy plot, and save an eps file, that the yticklabels in the 
eps are badly formatted. The exponent runs into the base.

from matplotlib import *
rc('tick',labelsize=10)
from pylab import *

semilogy([1,2,3],[1e-5,1,1e5])
savefig('temp.eps')

-- 

Darren

Re: [Matplotlib-users] semilog, exponents, and eps

[John H. <jdh...@ac...>]

>>>>> "Darren" == Darren Dale <dd...@co...> writes:

    Darren> Hi, I am reporting a minor bug. I noticed that if I change
    Darren> the ticklabel size to 10, draw a semilogy plot, and save
    Darren> an eps file, that the yticklabels in the eps are badly
    Darren> formatted. The exponent runs into the base.

    Darren> from matplotlib import * rc('tick',labelsize=10) from
    Darren> pylab import *

    Darren> semilogy([1,2,3],[1e-5,1,1e5]) savefig('temp.eps')

The relevant section of code is matplotlib.text.Text._get_layout_super

        wb,hb = renderer.get_text_width_height(base, self._fontproperties, False)
        we,he = renderer.get_text_width_height(exponent, fpexp, False)

        w = wb+we

        xb, yb = self._transform.xy_tup((self._x, self._y))
        xe = xb+wb
        ye = yb+0.5*hb
        h = ye+he-yb

w,h is width and height and e,b is exponent and base -- eg, xb is the
x location of the base and wb is the width of the base.  Try adding a
pad to xe, eg

   xe = xb+1.05*wb

and see if you can find something that works well for a variety of
reasonable font sizes.  You might want to make the pad dependent on
the fontsize...

JDH

Re: [Matplotlib-users] semilog, exponents, and eps

[Darren D. <dd...@co...>]

On Tuesday 22 February 2005 01:47 pm, John Hunter wrote:
> >>>>> "Darren" == Darren Dale <dd...@co...> writes:
>
>     Darren> Hi, I am reporting a minor bug. I noticed that if I change
>     Darren> the ticklabel size to 10, draw a semilogy plot, and save
>     Darren> an eps file, that the yticklabels in the eps are badly
>     Darren> formatted. The exponent runs into the base.
>

[...]

>
> The relevant section of code is matplotlib.text.Text._get_layout_super

[...]

> see if you can find something that works well for a variety of
> reasonable font sizes.  You might want to make the pad dependent on
> the fontsize...

The following conditions will work for eps files, however, the labels in the 
plot on the screen are adversely effected.

        if size<12: xe = xb+1.3*wb
        elif size==16: xe = xb+1.175*wb
        else: xe = xb+1.125*wb
        ye = yb+0.5*hb

Is it possible that the translation to postscript is what needs to be 
modified?

Darren