LaTeX fonts

_Johan_Ekh · August 7, 2007, 3:37pm

OK,
here is the LaTeX example from the cookbook, i.e. I executed the following:

— x —

import pylab
from pylab import arange,pi,sin,cos,sqrt
fig_width_pt = 246.0 # Get this from LaTeX using \showthe\columnwidth

inches_per_pt = 1.0/72.27 # Convert pt to inch
golden_mean = (sqrt(5)-1.0)/2.0 # Aesthetic ratio
fig_width = fig_width_ptinches_per_pt # width in inches
fig_height = fig_widthgolden_mean # height in inches

fig_size = [fig_width,fig_height]
params = {‘backend’: ‘ps’,
‘axes.labelsize’: 10,
‘text.fontsize’: 10,
‘xtick.labelsize’: 8,
’
ytick.labelsize’: 8,
‘text.usetex’: True,
‘figure.figsize’: fig_size}
pylab.rcParams.update(params)

Generate data

x = pylab.arange(-2pi,2pi,0.01)
y1 = sin(x)
y2 = cos(x)

Plot data

pylab.figure(1)
pylab.clf()
pylab.axes([0.125,0.2,0.95-0.125,0.95-0.2])
pylab.plot(x,y1,‘g:’,label=‘\sin(x)’)
pylab.plot(x,y2,‘-b’,label=‘\cos(x)’)

pylab.xlabel(‘x (radians)’)
pylab.ylabel(‘y’)
pylab.legend()
pylab.savefig(‘fig1.eps’)

— x —

Please find attached the resulting picture and the output from running the script with the flag “–verbose-debug-annoying”.

Best regards,
Johan

2007/8/7, Darren Dale <dd55@…163…>:

fig1.eps (71.2 KB)

verbose-debug-annoying-output.text (7.87 KB)

···

Hi Johan,

Please try following the instructions I sent in my last post.

On Tuesday 07 August 2007 10:53:31 am you wrote:

Hi, and thanks for your answer.

I got the following output from running my script with the

–verbose-helpful flag:

— x —

joeh@…1695…:~/ABB/HVC/SubSea/Python> python plot_data.py
–verbose-helpful
matplotlib data path /usr/lib64/python2.5/site-packages/matplotlib/mpl-data

$HOME=/home/joeh
CONFIGDIR=/home/joeh/.matplotlib
loaded rc file /home/joeh/.matplotlib/matplotlibrc
matplotlib version 0.90.0
verbose.level helpful
interactive is False

platform is linux2
numerix numpy 1.0.3
font search path [‘/usr/lib64/python2.5/site-packages/matplotlib/mpl-data’]
loaded ttfcache file /home/joeh/.matplotlib/ttffont.cache
backend GTKAgg version 2.10.3
Could not match Computer Modern Roman, normal, normal. Returning
/usr/lib64/python2.5/site-packages/matplotlib/mpl-data/Vera.ttf
Found dvipng version 1.5
Could not match Computer Modern Roman, normal, normal. Returning

/usr/lib64/python2.5/site-packages/matplotlib/mpl-data/Vera.ttf
Could not match Computer Modern Roman, normal, normal. Returning
/usr/lib64/python2.5/site-packages/matplotlib/mpl-data/Vera.ttf

%%BoundingBox: 96 263 483 504
%%HiResBoundingBox: 96.933583 263.234875 482.480001 503.829758

— x —

Definitely looks like some missing fonts, does anyone known what I have to

do?
Best regards,
Johan

2007/8/7, Darren Dale <dd55@…163…>:

On Tuesday 07 August 2007 07:37:04 am Johan Ekh wrote:

Hi all,
I’m new to Python in general and Matplotlib in particular.
I’m trying to create publication quality plots for inclusion
in LaTeX papers and presentations and have some problems

to get the fonts right.

My matplotlibrc contains the following lines

font.family : serif
font.serif : Times, Palatino, New Century Schoolbook, Bookman,

Computer Modern Roman
font.sans-serif : Helvetica, Avant Garde, Computer Modern Sans serif
font.cursive : Zapf Chancery
font.monospace : Courier, Computer Modern Typewriter

and my Python script contains the following lines

params = {‘backend’: ‘ps’,
‘axes.labelsize’: 12,
      'text.fontsize': 12,
      'xtick.labelsize': 10,
      'ytick.labelsize': 10,
      'text.usetex': True,
      'figure.figsize': fig_size}
rcParams.update(params)

I run what I believe is a standard openSUSE 10.2 installation of tetex
and

python, including matplotlib.

Still, fonts in my matplotlib plot are different from the ones used in

my

LaTeX document. Also, strangely
psfrag does not seem to work? Nothing ever gets replaced in my plot!

Can someone please help me out, what am I doing wrong?

Please make sure that the external dependencies are installed and
properly configured, see
http://www.scipy.org/Cookbook/Matplotlib/UsingTex
. If that doesn’t help,
try setting your verbose.level to “debug”, write as simple a script as
possible that reproduces the problem, and post again, along with the
output and perhaps the figure.

–
Darren S. Dale, Ph.D.
Staff Scientist
Cornell High Energy Synchrotron Source
Cornell University
275 Wilson Lab
Rt. 366 & Pine Tree Road
Ithaca, NY 14853

dd55@…163…
office: (607) 255-3819
fax: (607) 255-9001
http://www.chess.cornell.edu

_Darren_Dale1 · August 7, 2007, 3:54pm

What is wrong with your output? It looks fine to me. Maybe there is an issue
with your ps viewer. Try using the agg backend, and saving a png to compare
the results.

Also, a couple comments:

Any of your strings that have backslashes need to be raw strings:
'\\sin$x$' should be r'\\sin$x$'.

You should do this:

import matplotlib as mpl
params = {'backend': 'ps',
           'axes.labelsize': 10,
           'text.fontsize': 10,
           'xtick.labelsize': 8,
           'ytick.labelsize': 8,
           'text.usetex': True,
           'figure.figsize': fig_size}
mpl.rcParams.update(params)

before you do this:

import pylab

Darren

···

On Tuesday 07 August 2007 11:37:45 am Johan Ekh wrote:

OK,
here is the LaTeX example from the cookbook, i.e. I executed the following:

--- x ---

import pylab
from pylab import arange,pi,sin,cos,sqrt
fig_width_pt = 246.0 # Get this from LaTeX using \showthe\columnwidth
inches_per_pt = 1.0/72.27 # Convert pt to inch
golden_mean = (sqrt(5)-1.0)/2.0 # Aesthetic ratio
fig_width = fig_width_pt*inches_per_pt # width in inches
fig_height = fig_width*golden_mean # height in inches
fig_size = [fig_width,fig_height]
params = {'backend': 'ps',
          'axes.labelsize': 10,
          'text.fontsize': 10,
          'xtick.labelsize': 8,
          'ytick.labelsize': 8,
          'text.usetex': True,
          'figure.figsize': fig_size}
pylab.rcParams.update(params)
# Generate data
x = pylab.arange(-2*pi,2*pi,0.01)
y1 = sin(x)
y2 = cos(x)
# Plot data
pylab.figure(1)
pylab.clf()
pylab.axes([0.125,0.2,0.95-0.125,0.95-0.2])
pylab.plot(x,y1,'g:',label='\\sin$x$')
pylab.plot(x,y2,'-b',label='\\cos$x$')
pylab.xlabel('x (radians)')
pylab.ylabel('y')
pylab.legend()
pylab.savefig('fig1.eps')

--- x ---

Please find attached the resulting picture and the output from running the
script with the flag "--verbose-debug-annoying".

_Johan_Ekh · August 7, 2007, 4:17pm

Well, it looks OK but the fonts are still not the same as the ones used in LaTeX (at least not in my installation).
Please look at the attached picture. It is another example but is shows the difference between the fonts. Best seen

if you focus on the digit “6” in the graph (the upper digit) and in the text (the lower digit).

Best regards,
Johan

2007/8/7, Darren Dale <
dd55@…163…>:

···

On Tuesday 07 August 2007 11:37:45 am Johan Ekh wrote:

OK,

here is the LaTeX example from the cookbook, i.e. I executed the following:

— x —

import pylab
from pylab import arange,pi,sin,cos,sqrt
fig_width_pt = 246.0 # Get this from LaTeX using \showthe\columnwidth

inches_per_pt = 1.0/72.27 # Convert pt to inch
golden_mean = (sqrt(5)-1.0)/2.0 # Aesthetic ratio
fig_width = fig_width_ptinches_per_pt # width in inches
fig_height = fig_widthgolden_mean # height in inches

fig_size = [fig_width,fig_height]
params = {‘backend’: ‘ps’,
‘axes.labelsize’: 10,
‘text.fontsize’: 10,
'xtick.labelsize
': 8,
‘ytick.labelsize’: 8,
‘text.usetex’: True,
‘figure.figsize’: fig_size}
pylab.rcParams.update(params)

Generate data

x = pylab.arange(-2pi,2pi,0.01)
y1 = sin(x)
y2 = cos(x)

Plot data

pylab.figure(1)
pylab.clf()
pylab.axes([0.125,0.2,0.95-0.125,0.95-0.2])
pylab.plot(x,y1,‘g:’,label=‘\sin(x)’)

pylab.plot(x,y2,‘-b’,label=‘\cos(x)’)
pylab.xlabel(‘x (radians)’)
pylab.ylabel(‘y’)
pylab.legend()
pylab.savefig(‘fig1.eps’)

— x —

Please find attached the resulting picture and the output from running the
script with the flag “–verbose-debug-annoying”.

What is wrong with your output? It looks fine to me. Maybe there is an issue

with your ps viewer. Try using the agg backend, and saving a png to compare
the results.

Also, a couple comments:

Any of your strings that have backslashes need to be raw strings:
‘\sin(x)’ should be r’\sin(x)'.

You should do this:

import matplotlib as mpl
params = {‘backend’: ‘ps’,
‘axes.labelsize’: 10,
‘text.fontsize’: 10,
'xtick.labelsize
': 8,
‘ytick.labelsize’: 8,
‘text.usetex’: True,
‘figure.figsize’: fig_size}
mpl.rcParams.update(params)

before you do this:

import pylab

Darren

_Darren_Dale1 · August 7, 2007, 5:00pm

You have your font.family set to serif and font.serif set to Times. That means
you are telling matplotlib to use the Times fonts, but you are using the
default Computer Modern fonts in your latex document. I suggest you either
add \usepackage{pslatex} in your latex header to use the adobe fonts instead
of computer modern, or move computer modern roman to the front of your list
of serif fonts in matplotlib.

Darren

···

On Tuesday 07 August 2007 12:17:56 pm Johan Ekh wrote:

Well, it looks OK but the fonts are still not the same as the ones used in
LaTeX (at least not in my installation).
Please look at the attached picture. It is another example but is shows the
difference between the fonts. Best seen
if you focus on the digit "6" in the graph (the upper digit) and in the
text (the lower digit).