Re: [Matplotlib-users] Problems with, LaTeX symbols, axes rescaling
Zane Selvans wrote: Yesterday I compiled Matplotlib from SVN, and installed it to run on top [...] The second thing is that in a figure in which I'm using twinx() to create a separate y-axis using the same x-axis, I no longer seem to be able to control the limits of the new axes. They just automatically re-scale to fit whatever data is being plotted, regardless of whether I use ax.set_ylim(). Formerly, autoscaling was not supported by shared axes, which would have included twinx. Now autoscaling is supported. I suspect this is the difference you are seeing. The solution is to turn off autoscaling with the ax.set_autoscale_on method, or to call ax.set_ylim after you have plotted your lines. Eric - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Problems with, LaTeX symbols, axes rescaling
On Mon, Nov 24, 2008 at 6:23 PM, Zane Selvans [EMAIL PROTECTED] wrote:
whether it's just the fact that I'm using the SVN code.
The first thing I noticed is that all of the LaTeX symbols I have in my
plots are now messed up. I could see this being a font issue... does anyone
know how/where Matplotlib gets pointed at the LaTeX fonts? And how I would
check to see where it's looking, or whether it's not finding what it's
looking for? I'm not getting any errors - my greek letters just cease to be
greek, and various text decorations (like \bar{D}) come out as other things
altogether (like D, only with an Angstrom symbol over it...).
I suggest completely wiping your .matplotlib directory (saving only
your matplotlibrc if you have customized it). matplotlib caches a
fair amount of font and latex rendering stuff. I had a similar
problem on an upgrade with mathtext. We are not sure why it is
happening yet, but it will probably go away if you rm -rf
~/.matplotlib. Also, wipe your site-packages/matplotlib dir before
installing. See
http://matplotlib.sourceforge.net/faq/installing_faq.html#cleanly-rebuild-and-reinstall-everything
To get more verbose information about what mpl is doing behind the
scense, run with
python myscript.py --verbose-debug
You can use --verbose-helpful for less output.
I think it might be a good idea for us to start using a versioned dir
structure for the cached data...
JDH
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Re: [Matplotlib-users] Problems with, LaTeX symbols, axes rescaling
On Nov 24, 2008, at 5:23 PM, John Hunter wrote: The first thing I noticed is that all of the LaTeX symbols I have in my plots are now messed up. I could see this being a font issue... does anyone I suggest completely wiping your .matplotlib directory (saving only your matplotlibrc if you have customized it). matplotlib caches a Thanks, this fixed it! Though, futzing with the LaTeX settings in the new matplotlibrc it appears that something about how/when it chooses when to format as tex has changed. If text.usetex is True, text in my labels and titles that is enclosed within $$'s gets typeset as tex, but apparently *all* of the xtick labels get set as mathtext - they're in the light/thin and slightly more difficult to read LaTeX font, and in my Basemap figures, the NSEW modifiers on the text objects indicating lat/lon direction are all italicised, as they would be were they enclosed in $ $'s. I don't seem to be able to get the relatively bold, sans-serif tick labels, while still preserving the ability to typeset math in my labels and titles... (An aside: how does one go about decorating the Text objects that label the ticks? I frequently have an axis whose units are degrees, and I'd rather just be able to append a $^\circ$ on the end of the text for the ticks, rather than have to say in the axis label [degrees].) If I set text.markup to 'tex', instead of 'plain' I get a complaint about it being invalid, with a pointer to a URL that no longer exists to obtain a new matplotlibrc: Bad key text.markup on line 162 in /Users/zane/.matplotlib/ matplotlibrc. You probably need to get an updated matplotlibrc file from http://matplotlib.sf.net/matplotlibrc or from the matplotlib source distribution Thanks again! Zane -- Zane Selvans Amateur Earthling [EMAIL PROTECTED] 303/815-6866 http://zaneselvans.org PGP Key: 55E0815F - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Problems with, LaTeX symbols, axes rescaling
On Mon, Nov 24, 2008 at 8:37 PM, Zane Selvans [EMAIL PROTECTED] wrote: On Nov 24, 2008, at 5:23 PM, John Hunter wrote: The first thing I noticed is that all of the LaTeX symbols I have in my plots are now messed up. I could see this being a font issue... does anyone I suggest completely wiping your .matplotlib directory (saving only your matplotlibrc if you have customized it). matplotlib caches a Thanks, this fixed it! Though, futzing with the LaTeX settings in the new matplotlibrc it appears that something about how/when it chooses when to format as tex has changed. If text.usetex is True, text in my labels and titles that is enclosed within $$'s gets typeset as tex, but apparently *all* of the xtick labels get set as mathtext - they're in the light/thin and slightly more difficult to read LaTeX font, and in my Basemap figures, the NSEW modifiers on the text objects indicating lat/lon direction are all italicised, as they would be were they enclosed in $$'s. I don't seem to be able to get the relatively bold, sans-serif tick labels, while still preserving the ability to typeset math in my labels and titles... We have two modes to render latex -- one is native TeX layout and uses latex and dvipng, and is superior if you need all of TeX's capabilities (eg an eqnarray), but the fonts are suboptimal. The other is mathtext, which will cover 98% of most users' math needs, does not require a latex install because it is pure mpl, and uses nicer fonts . The docs are here: mathtext: http://matplotlib.sourceforge.net/users/mathtext.html usetex: http://matplotlib.sourceforge.net/users/usetex.html I strongly encourage using mathtext over usetex, unless you need some of the hairy stuff from TeX. (An aside: how does one go about decorating the Text objects that label the ticks? I frequently have an axis whose units are degrees, and I'd rather just be able to append a $^\circ$ on the end of the text for the ticks, rather than have to say in the axis label [degrees].) Use a custom formatter. I'm freestyling here, so check the examples linked to below import matplotlib.ticker as ticker formatter = ticker.FormatStrFormatter(r'$%1.2f^\circ$') ax.xaxis.set_major_formatter(formatter) The API docs for the tick formatting and locating are here http://matplotlib.sourceforge.net/api/ticker_api.html And code examples matching formatter are here http://matplotlib.sourceforge.net/search.html?q=codex+formatter If I set text.markup to 'tex', instead of 'plain' I get a complaint about it being invalid, with a pointer to a URL that no longer exists to obtain a new matplotlibrc: Bad key text.markup on line 162 in /Users/zane/.matplotlib/matplotlibrc. You probably need to get an updated matplotlibrc file from http://matplotlib.sf.net/matplotlibrc or from the matplotlib source distribution I've updated the code in svn to point to the new location http://matplotlib.sourceforge.net/_static/matplotlibrc See also http://matplotlib.sourceforge.net/users/customizing.html JDH - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
