matplotlib-users Mailing List for matplotlib

Have you tried latex_float() as suggested here ?
http://stackoverflow.com/questions/13490292/format-number-using-latex-notation-in-python
def latex_float(f):
 float_str = "{0:.2g}".format(f)
 if "e" in float_str:
 base, exponent = float_str.split("e")
 return r"{0} \times 10^{{{1}}}".format(base, int(exponent))
 else:
 return float_str
title (r'$\omega=%s$' % latex_float(omega))
Am 20.11.2013 19:00, schrieb Neal Becker:
> I tried:
>
> plt.title (r'$\omega=%s$' % omega), where omega=-1e-5. The title says:
>
> omega=-1e-05
>
> with the 'e' in italics, and the whole thing generally ugly.
>
> What I'd like to see is what TeX would do for 1ドル \times 10^{5}$.
>
> I know mpl already can nicely format numbers for axis. Can I somehow use that
> mechanism to nicely format numbers in my title (or other places)?
>
>
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I tried:
plt.title (r'$\omega=%s$' % omega), where omega=-1e-5. The title says:
omega=-1e-05
with the 'e' in italics, and the whole thing generally ugly.
What I'd like to see is what TeX would do for 1ドル \times 10^{5}$.
I know mpl already can nicely format numbers for axis. Can I somehow use that
mechanism to nicely format numbers in my title (or other places)?

Hi all,
I'm running CentOS 5.9 and I would like to install the latest version of
matplotlib (or at least 1.2). The version of python I would like to use is
2.6 and it's invokable only with `python26`, not just `python`.
Now, I downloaded the tarball and installed the required packages
separately from their respective tarball, but I can't build (let alone
install) matplotlib:
In short, it says:
*/usr/share/python2.6/CXX/cxxsupport.cxx:40:38: error:
Src/Python2/cxxsupport.cxx: No such file or directory*
The full output is here: http://pastebin.com/7mVKZ6P5
I installed pycxx manually and it appears as *pycxx: yes [Using system CXX
(version unknown, no pkg-config info)]*
Any idea on how I can fix this?
Thanks!
Riccardo

On 11/18/2013 12:29 PM, Coleman, Bradley wrote:
>
> Chad, yes that's the problem. Thanks for responding.
>
> 
>
> "If you like the way the image appears on screen, use the DPI argument
> to savefig()"
>
> 
>
> I don't exactly understand this. What do you mean on screen? This
> code is integrated with a big project that I'm running inside of
> ecplise, so I'm not sure what you mean by on screen? Either way, when
> I add and change a DPI argument to savefig(), it just blows up the
> dimensions of the PNG.
>
If you display the figure using show(), and you like how it looks, you
can ramp up the dpi for the saved figure by giving savefig() the dpi=xx
argument.
> 
>
> "My question back to you is, why does it matter? Most layout programs
> will let you set the physical size of the figure and scale the DPI to
> match."
>
> * *
>
> So you're saying, fine let it produce a huge png and then shrink it
> with the html img tag and that will do the job, right? Well, that's
> really hard for us to do because we're using an existing solution and
> changing that will involve lawyers, I kid you not.
>
> 
>
And I thought my change review boards were rough...
> So, I can increase the DPI on the savefig call and correspondingly
> shrink the dimensions of the file in inches to get it to stay the same
> size, but the problem is the text and the lines, and the axis tick
> marks don't shrink too, which is really frustrating. I can then
> shrink the fonts, but I don't know how to shrink the tick marks and
> the lines. Anyways, it really seems like there should be an easier
> way -- not to appear unappreciative in any way of the hard work the
> devs put into this excellent project!
>
> 
>
It sounds like you may need to increase the image size in inches and
decrease the dpi to do what you want. It sounds like your html
framework or web browser is not respecting the dpi setting in the png
file that is created. As others have mentioned, can you generate an SVG
and embed that instead?
> Thanks!
>
> Bradley
>
> 
>
> 
>
> _ 
>
> 
>
> 
>
> *From:*Chad Kidder [mailto:cck...@gm...]
> *Sent:* Saturday, November 16, 2013 11:34 PM
> *To:* Coleman, Bradley
> *Subject:* Re: [Matplotlib-users] how can i raise the dpi without
> changing the dimensions of my picture?
>
> 
>
> Let me see if I understand this right, you want to leave the image
> dimensions, in inches, constant while increasing the resolution in DPI
> to get a sharper image. Did I get that correct?
>
> If you like the way the image appears on screen, use the DPI argument
> to savefig(). My experience is that if you change the DPI when
> creating the figure, that will change the layout.
>
> What it sounds like you are seeing is that when you crank the DPI up,
> the PNG you created does not change its listed DPI, and displays
> larger. I checked on my system, matplotlib 1.1.1, and it is updating
> the DPI in the PNG files.
>
> My question back to you is, why does it matter? Most layout programs
> will let you set the physical size of the figure and scale the DPI to
> match.
>
> On Nov 16, 2013 3:06 PM, "Bradley Coleman" <col...@se...
> <mailto:col...@se...>> wrote:
>
> Hi there, I make a figure, then I do some stuff, then I save the figure.
>
> stuff
> fig = figure(figsize = (0.75, 3.5))
> stuff
> fig.savefig('name.png', bbox_inches='tight')
>
> My figure is perfect, but I'm having trouble increasing the resolution.
> There are two ways that I can figure out to do that, one is send a dpi
> as an
> argument to figure() and the other to savefig(). Sending it to figure()
> doesn't change the file at all, so I'm not sure what it does, but
> sending it
> to savefig() does change the file. When I send dpi to savefig(), like
> dpi=500, the resolution seems to get much better, and the file size grows,
> but the problem is that the height and width of the picture grows too. I
> want the resolution to go up, but not the height and width of the picture.
> What can I do?
>
> Thanks!
> Bradley
>
>
>
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