matplotlib-users Mailing List for matplotlib

Try setting your ps.distiller.res rc setting to 6000. Does that help? If so, 
let me know and I will make a comment on the wiki.

Darren

On Friday 03 February 2006 18:25, Samuel M. Smith wrote:
> I just upgraded my Matplotlib to 0.86.2. The display of text using latex
> has really poor resolution. This was not the case with 0.83. Anyone know
> what Is the problem. The saved .eps files when converted to pdf have
> good
> resolution.
>
> I am using Mac OS X 10.4.4
> I have latex installed with
> ghostscript 8.51
> dvips(k) 5.95b
> numpy 0.9.5
> WXAgg
> wxwindows 2.6.2.1
>
> the following relevant rc settings
>
> font.latex.package  : type1cm
> text.usetex         : True  #
> text.tex.engine     : latex
>
> figure.dpi       : 100
> savefig.dpi       : 100
>
> changing the dpi just makes the window bigger with still poor rendering.
>
> when I run the example cookbook
> http://new.scipy.org/Wiki/Cookbook/Matplotlib/UsingTex
>
> I get the following on screen display

-- 
Darren S. Dale, Ph.D.
Cornell High Energy Synchrotron Source
Cornell University
200L Wilson Lab
Rt. 366 & Pine Tree Road
Ithaca, NY 14853

dd...@co...
office: (607) 255-9894
fax: (607) 255-9001

I just upgraded my Matplotlib to 0.86.2. The display of text using latex
has really poor resolution. This was not the case with 0.83. Anyone know
what Is the problem. The saved .eps files when converted to pdf have  
good
resolution.

I am using Mac OS X 10.4.4
I have latex installed with
ghostscript 8.51
dvips(k) 5.95b
numpy 0.9.5
WXAgg
wxwindows 2.6.2.1

the following relevant rc settings

font.latex.package  : type1cm
text.usetex         : True  #
text.tex.engine     : latex

figure.dpi       : 100
savefig.dpi       : 100

changing the dpi just makes the window bigger with still poor rendering.

when I run the example cookbook
http://new.scipy.org/Wiki/Cookbook/Matplotlib/UsingTex

I get the following on screen display

>>>>> "Brian" == Brian Granger <bgr...@sc...> writes:

    Brian> The odd thing is that I have an earlier build of matplotlib
    Brian> (maybe a week ago) on my laptop and it runs fine.  It also
    Brian> has this same code in _transforms.cpp.  That makes me think
    Brian> it is an install problem.

    Brian> Any thoughts?

Hey Brian, 

You need _transforms.cpp revision 1.46.  This was a bug I introducted
into CVS last night and it is now fixed.

JDH

Hello,

Last night I installed matplotlib from CVS on Mac OS X (python  
2.4.1).  I am using numpy from svn and have installed the  
dependencies (zlib, libpng, freetype, wxPython).  I don't have  
Numeric or numarray installed on this machine.

Everything builds fine, but when I run ipython -pylab and do plot 
((1,2,3)) I the following:

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site- 
packages/matplotlib/axes.py in __init__(self, fig, *args, **kwargs)
    4127     def __init__(self, fig, *args, **kwargs):
    4128         SubplotBase.__init__(self, fig, *args)
-> 4129         Axes.__init__(self, fig, [self.figLeft, self.figBottom,
    4130                                   self.figW, self.figH],  
**kwargs)
    4131

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site- 
packages/matplotlib/axes.py in __init__(self, fig, rect, axisbg,  
frameon, sharex, sharey, label, **kwargs)
     367         self._hold = rcParams['axes.hold']
     368         self._connected = {} # a dict from events to (id, func)
--> 369         self.cla()
     370
     371         # funcs used to format x and y - fall back on major  
formatters

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site- 
packages/matplotlib/axes.py in cla(self)
     664         self.yaxis.cla()
     665
--> 666         self.dataLim.ignore(1)
     667         if self._sharex is not None:
     668             self.xaxis.major = self._sharex.xaxis.major

IndexError: tuple index out of range

I think the code being called in the ignore() method is in  
_transforms.cpp:

Py::Object
Bbox::ignore(const Py::Tuple &args) {
   _VERBOSE("Bbox::ignore");
   args.verify_length(1);
   _ignore = Py::Int(args[1]);
   return Py::Object();
}

If the length of the tuple is 1, should it read:

   _ignore = Py::Int(args[0]);

Or does the Py::Tuple class index tuples beginning with 1?

The odd thing is that I have an earlier build of matplotlib (maybe a  
week ago) on my laptop and it runs fine.  It also has this same code  
in _transforms.cpp.  That makes me think it is an install problem.

Any thoughts?

Brian

Darren,

Your suggestion to use afm fonts worked!  It results in nice, small file
sizes and fixes the ps2pdf problem I was having.

Thanks,
Curtis

Hello NG,

    I have sligthly modified the two_scales.py demo, and I 
am seeing something strange. In the left y-axis I plot a sin(x) curve, 
while on the right axis I plot an exp(x) curve. In the figure, exp(x) 
reach very big values so the ticks are adjusted with a "x1e4" 
multiplier: but this multiplier should be put on the right axis (where 
exp(x) is plotted) and not on the left axis (where sin(x) is plotted). 
Does anyone know what I am doing wrong?
I attach the script at the end 
of the mail.

Thanks in advance for every suggestion.

Andrea.

from 
pylab import *

ax1 = subplot(111)
t = arange(0.01, 10.0, 0.01)
s2 = sin
(2*pi*t)
plot(t, s2, 'r.')
ylabel('sin')

# turn off the 2nd axes 
rectangle 
# with frameon kwarg
ax2 = twinx()
s1 = exp(t)
plot(t, s1, 
'b-')
xlabel('time (s)')
ylabel('exp')

show()

> -----Original Message-----
> From: mat...@li...
> [mailto:mat...@li...] On=20
> Behalf Of Jouni K Seppanen
> Sent: 03 February 2006 14:23
> To: mat...@li...
> Subject: [Matplotlib-users] Re: UserWarning: Bad key=20
> "font.latex.package"
>=20
>=20

> TeX power users will want to have the option to tweak everything.
>=20
> --
> Jouni

I have been playing with a hack in texmanager.py & backend_ps.py to
include a preamble that can consist of multiple `\usepackage{}'
statements or LaTeX maros etc. just before the `\begin{document}' line,
using and additional rcParams `key':

rcParams['latex.preamble.filename']=3Dr'my_preamble.tex'

It would be a nice addition to LaTeX power users.... if there is any
interest, that is..

Peter-Jan

Hello John & NG,

    thank you very much for your answer. It seems to 
me that using set_frame_on() just hides/shows the whole axes content. 
Probably I didn't make myself clear (sorry for my bad english). I 
attach a jpeg example of what I mean for bon on/off. The figure at the 
left if with box "off", while at the right the box is "on".

Thanks in 
advance.

Andrea.

>I didn't know matlab had such a function, but it 
looks from your
>description like it corresponds to the frame_on 
attribute of the
>axes.  You can turn the axes box off with, eg
>
>  ax 
= subplot(111, frame_on=False)
>
>or for an existing axes instance
>
>  
ax.set_frame_on(False)
>
>or with matlab-like handle graphics
>
>  setp
(ax, frame_on=False)
>
>( you can get the current axes instance wih 
gca() )
>
>It just added a "box" wrapper function for pylab which
>does 
>
>def box(on=None):
>    """
>    Turn the axes box on or off 
according to 'on'
>
>    If on is None, toggle state
>    """
>    ax = 
gca()
>    if on is None:
>        on = not ax.get_frame_on()
>    ax.
set_frame_on(on)
>    draw_if_interactive()
>
>
>which is now in CVS.  
Let me know if this has the desired behavior...
>
>JDH
>

On Friday 03 February 2006 7:22 am, Jouni K Seppanen wrote:
> Darren Dale <dd...@co...> writes:
> > When you select Times as your serif font, that loads the mathptmx
> > package. Likewise, if you select palatino, the mathpazo package is
> > loaded.
>
> Wow, that's neat! If I were to buy the commercial TM Math fonts=B9 from
> Micropress, it would be useful to have some way of telling matplotlib
> to use them with Times instead of the free mathptmx. I agree that it
> is good to handle the usual case gracefully by letting the user
> specify simply "Times" instead of an obscure LaTeX package name like
> "mathptmx", but TeX power users will want to have the option to tweak
> everything.
>
> =B9 http://www.micropress-inc.com/fonts/tmmath/tmmain.htm

I don't know why anyone would want to use TM math fonts with adobe times, w=
hen=20
they could use the matching "TM text" fonts instead. For now I prefer to ke=
ep=20
it simple, and we can consider complexity if someone really needs it.

Darren

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

> When you select Times as your serif font, that loads the mathptmx package. 
> Likewise, if you select palatino, the mathpazo package is loaded. 

Wow, that's neat! If I were to buy the commercial TM Math fonts¹ from
Micropress, it would be useful to have some way of telling matplotlib
to use them with Times instead of the free mathptmx. I agree that it
is good to handle the usual case gracefully by letting the user
specify simply "Times" instead of an obscure LaTeX package name like
"mathptmx", but TeX power users will want to have the option to tweak
everything.

¹ http://www.micropress-inc.com/fonts/tmmath/tmmain.htm

-- 
Jouni

On Friday 03 February 2006 7:05 am, Darren Dale wrote:
> On Friday 03 February 2006 6:47 am, Jouni K Seppanen wrote:
> > Nils Wagner <nw...@me...> writes:
> > > How can I get rid of this warnings ?
> > >
> > > UserWarning: Bad key "font.latex.package" on line 118 in
> > > /home/nwagner/.matplotlib/matplotlibrc
> > > UserWarning: Bad key "text.tex.engine" on line 127 in
> > > /home/nwagner/.matplotlib/matplotlibrc
> >
> > Remove these lines from your matplotlibrc. You're apparently using the
> > CVS version, since these rc keys have been removed since the last
> >
> > release. You should probably read the CHANGELOG file when you update:
> > | 2006-02-01 Dropped TeX engine support in usetex to focus on LaTeX. -
> > | DSD
> > |
> > | 2006-01-29 Improved usetex option to respect the serif, sans-serif,
> > | monospace, and cursive rc settings. Removed the font.latex.package rc
> > | setting, it is no longer required - DSD
> >
> > By the way, can the current implementation really do everything you
> > could do with font.latex.package? For example, if I want to use the
> > mathptm fonts=B9 for math, how do I specify the equivalent of
> > \usepackage{mathptmx} in matplotlibrc?
> >
> > =B9 http://www.tex.ac.uk/cgi-bin/texfaq2html?label=3Dpsfchoice
>
> Thank you for the link. I was not familiar with it and will give it a clo=
se
> look, maybe this weekend.
>
> When you select Times as your serif font, that loads the mathptmx package.
> Likewise, if you select palatino, the mathpazo package is loaded. Here is=
 a
> link to a pdf discussing the adobe fon packages that are currently
> available, its a good reference for the usetex'ers out there. I'll add a
> link to the wiki when it is time to update it.

Sorry, here's the link
http://www.ctan.org/tex-archive/macros/latex/required/psnfss/psnfss2e.pdf=20

On Friday 03 February 2006 6:47 am, Jouni K Seppanen wrote:
> Nils Wagner <nw...@me...> writes:
> > How can I get rid of this warnings ?
> >
> > UserWarning: Bad key "font.latex.package" on line 118 in
> > /home/nwagner/.matplotlib/matplotlibrc
> > UserWarning: Bad key "text.tex.engine" on line 127 in
> > /home/nwagner/.matplotlib/matplotlibrc
>
> Remove these lines from your matplotlibrc. You're apparently using the
> CVS version, since these rc keys have been removed since the last
>
> release. You should probably read the CHANGELOG file when you update:
> | 2006-02-01 Dropped TeX engine support in usetex to focus on LaTeX. - DSD
> |
> | 2006-01-29 Improved usetex option to respect the serif, sans-serif,
> | monospace, and cursive rc settings. Removed the font.latex.package rc
> | setting, it is no longer required - DSD
>
> By the way, can the current implementation really do everything you
> could do with font.latex.package? For example, if I want to use the
> mathptm fonts=B9 for math, how do I specify the equivalent of
> \usepackage{mathptmx} in matplotlibrc?
>
> =B9 http://www.tex.ac.uk/cgi-bin/texfaq2html?label=3Dpsfchoice

Thank you for the link. I was not familiar with it and will give it a close=
=20
look, maybe this weekend.

When you select Times as your serif font, that loads the mathptmx package.=
=20
Likewise, if you select palatino, the mathpazo package is loaded. Here is a=
=20
link to a pdf discussing the adobe fon packages that are currently availabl=
e,=20
its a good reference for the usetex'ers out there. I'll add a link to the=20
wiki when it is time to update it.


=2D-=20
Darren S. Dale, Ph.D.
dd...@co...

Nils Wagner <nw...@me...> writes:

> How can I get rid of this warnings ?
>
> UserWarning: Bad key "font.latex.package" on line 118 in
> /home/nwagner/.matplotlib/matplotlibrc
> UserWarning: Bad key "text.tex.engine" on line 127 in
> /home/nwagner/.matplotlib/matplotlibrc

Remove these lines from your matplotlibrc. You're apparently using the
CVS version, since these rc keys have been removed since the last
release. You should probably read the CHANGELOG file when you update:

| 2006-02-01 Dropped TeX engine support in usetex to focus on LaTeX. - DSD
| 
| 2006-01-29 Improved usetex option to respect the serif, sans-serif, monospace, 
|            and cursive rc settings. Removed the font.latex.package rc setting, 
|            it is no longer required - DSD

By the way, can the current implementation really do everything you
could do with font.latex.package? For example, if I want to use the
mathptm fonts¹ for math, how do I specify the equivalent of
\usepackage{mathptmx} in matplotlibrc?

¹ http://www.tex.ac.uk/cgi-bin/texfaq2html?label=psfchoice

-- 
Jouni

Hi all,

How can I get rid of this warnings ?

>>> import matplotlib
/usr/lib64/python2.4/site-packages/matplotlib/__init__.py:892:
UserWarning: Bad key "font.latex.package" on line 118 in
/home/nwagner/.matplotlib/matplotlibrc
  warnings.warn('Bad key "%s" on line %d in %s' % (key, cnt, fname))
/usr/lib64/python2.4/site-packages/matplotlib/__init__.py:892:
UserWarning: Bad key "text.tex.engine" on line 127 in
/home/nwagner/.matplotlib/matplotlibrc
  warnings.warn('Bad key "%s" on line %d in %s' % (key, cnt, fname))




>>> matplotlib.__version__
'0.86.2'


Nils

Thanks for the feedback!  It sounds like it's just a quirk of my
particular setup and will not inhibit usage of the figures in the paper.
So, I'll ignore it, since I can always print it perfectly from just the
postscript directly.

Cheers,
Curtis


      * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    *   Curtis S. Cooper, Graduate Research Assistant         *
   *    Lunar and Planetary Laboratory, University of Arizona  *
   *    http://www.lpl.arizona.edu/~curtis/		       *
   *    Kuiper Space Sciences, Rm. 318                         *
    *   1629 E. University Blvd.,                             *
     *  Tucson, AZ 85721        * * * * * * * * * * * * * * *
      * Wk: (520) 621-1471     *
       * * * * * * * * * * * *

On Thu, 2 Feb 2006, Darren Dale wrote:

> Hi Curtis,
>
> I'm afraid I can't be of much help. I've printed your pdf files on two
> different computers now, one at work and one at home, without any problems.
> Maybe you have a problem with your printer driver?
>
> Darren
>
> On Tuesday 31 January 2006 2:55 pm, Curtis Cooper wrote:
> > Hi Darren,
> >
> > Thanks for your reply.  I am sending you a postscript figure from my
> > upcoming Astrophysical Journal paper and the barebones Python/Pylab code
> > used to generate it.
> >
> > I do not normally use the psdistiller or usetex options.  I have changed
> > my rc settings by letting numerix = numarray.  Otherwise, they are the
> > same as the default in all fields.
> >
> > I am using matplotlib CVS (current as of yesterday).  My operating system
> > is Debian "testing," which by default uses Python 2.3 (not 2.4).  I always
> > just use Python 2.3 per the Debian default.  The packages are current.
> >
> > For the paper itself, I use Latex2e (AASTEX just has Latex macros to
> > help typeset papers for ApJ).  But the problem shows up when I do ps2pdf
> > on the fig.ps file as well as ps2pdf on the whole paper.  So I don't think
> > that's the issue.
> >
> > I'm using GPL (not Aladdin) Ghostscript for the ps2pdf.  Although fig.pdf
> > displays correctly in acroread and xpdf, it does not print correctly (when
> > I go print... in acroread 7).  Using epstopdf produces the same thing: an
> > apparently fine pdf file of the figure that doesn't print properly.
> >
> > Thanks,
> > Curtis
>
> --
> Darren S. Dale, Ph.D.
> dd...@co...
>

Hi Curtis,

I'm afraid I can't be of much help. I've printed your pdf files on two 
different computers now, one at work and one at home, without any problems. 
Maybe you have a problem with your printer driver?

Darren

On Tuesday 31 January 2006 2:55 pm, Curtis Cooper wrote:
> Hi Darren,
>
> Thanks for your reply.  I am sending you a postscript figure from my
> upcoming Astrophysical Journal paper and the barebones Python/Pylab code
> used to generate it.
>
> I do not normally use the psdistiller or usetex options.  I have changed
> my rc settings by letting numerix = numarray.  Otherwise, they are the
> same as the default in all fields.
>
> I am using matplotlib CVS (current as of yesterday).  My operating system
> is Debian "testing," which by default uses Python 2.3 (not 2.4).  I always
> just use Python 2.3 per the Debian default.  The packages are current.
>
> For the paper itself, I use Latex2e (AASTEX just has Latex macros to
> help typeset papers for ApJ).  But the problem shows up when I do ps2pdf
> on the fig.ps file as well as ps2pdf on the whole paper.  So I don't think
> that's the issue.
>
> I'm using GPL (not Aladdin) Ghostscript for the ps2pdf.  Although fig.pdf
> displays correctly in acroread and xpdf, it does not print correctly (when
> I go print... in acroread 7).  Using epstopdf produces the same thing: an
> apparently fine pdf file of the figure that doesn't print properly.
>
> Thanks,
> Curtis

-- 
Darren S. Dale, Ph.D.
dd...@co...

>>>>> "Ted" == Ted Drain <ted...@jp...> writes:

    Ted> Panos, Ordinal in this context is the y values.  It's not the
    Ted> length of the y array, it's the values in the array.  Dates
    Ted> are days past some epoch and dates before the epoch are not
    Ted> allowed.  Maybe you're getting a date value that's < 1 which
    Ted> is what is causing the problem.  Are you plotting dates on
    Ted> the y axis anywhere?

Here ordinal is used in the sense of the python datetime toordinal
method, not in the ordinal / abscissa of the y / x axis.  Admittendly
ambiguous.  But I think your first comment is spot on: probably an
illegal ordinal value is used, eg

  import datetime
  print datetime.datetime.fromordinal(1)
  print datetime.datetime.fromordinal(0)

JDH

>>>>> "Victoria" == Victoria G Laidler <la...@st...> writes:

    Victoria> Hi folks, I frequently need to make a vector plot that
    Victoria> shows (dx,dy) displacements from a set of (x,y)
    Victoria> points. "Quiver" doesn't seem to do quite what I want,
    Victoria> although maybe I just can't figure out how to use it.

There have been a few gripes about quiver...you are not alone.

    for i in range(len(x)):
        dhandle=plot([x[i],u[i]],[y[i],v[i]],'o-b',
                     label='shifts [* %4.1f]'%scale)


In general, repeated calls to plot can be very inefficient since a new
matplotlib.lines.Line2D object is created each time.  In cases like
these, you want to use a LineCollection or a PolygonCollection (see
matplotlib.collections).  There are a number of examples in
matplotlib.axes and matplotlib.finance.  Search for collections...

Thanks!
JDH

>>>>> "Nils" == Nils Wagner <nw...@me...> writes:
    Nils> legend(r'u_0')

This is a typical error.  legend expects you to pass a sequence of
strings, not a string (otherwise it interprets the string as a
sequence).  This has nothing to do with subscripting...  But we should
warn on this because it is such a common mistake.  What you want is


legend((r'u_0',))

JDH

>>>>> "Andrea" == Andrea Gavana <and...@ti...> writes:

    Andrea> Hello NG, I am sorry for the possible stupid
    Andrea> question. Does it make any sense to ask if it's possible
    Andrea> to define in matplotlib a Matlab-like command:

    Andrea> box on

    Andrea> or:

    Andrea> box off

    Andrea> In order to draw/undraw the axes bounding box?

I didn't know matlab had such a function, but it looks from your
description like it corresponds to the frame_on attribute of the
axes.  You can turn the axes box off with, eg

  ax = subplot(111, frame_on=False)

or for an existing axes instance

  ax.set_frame_on(False)

or with matlab-like handle graphics

  setp(ax, frame_on=False)

( you can get the current axes instance wih gca() )

It just added a "box" wrapper function for pylab which
does 

def box(on=None):
    """
    Turn the axes box on or off according to 'on'

    If on is None, toggle state
    """
    ax = gca()
    if on is None:
        on = not ax.get_frame_on()
    ax.set_frame_on(on)
    draw_if_interactive()


which is now in CVS.  Let me know if this has the desired behavior...

JDH