This looks neat. I am sorry you haven't gotten a response back yet from
others on the mailing list. What would be really neat is if we could
generalize this to not require TeX/PGF (i.e., find a freetype font that
does this) and make a matplotlib style file.
Cheers!
Ben Root
On Tue, Nov 11, 2014 at 9:14 PM, Andy Buckley <a...@insectnation.org> wrote:
> Hmm, no reply again. Are these emails getting through?
>
> I appreciate this was quite a long and detailed question -- maybe I
> should raise these sorts of things on the MPL dev list instead? I'm
> happy to contribute on improving the (TeX) font control, if there's
> interest, but for now found a workaround using the mathspec package:
>
> mpl.rcParams["font.serif"] = ["TeX Gyre Pagella"]
> mpl.rcParams["pgf.preamble"] = [r"\usepackage{mathspec}",
> r"\defaultfontfeatures{Numbers=OldStyle}",
> r"\setmathsfont(Digits,Greek){TeX Gyre Pagella}"]
>
> and variations on that theme. Not wonderfully integrated, and could be
> improved, but it does allow the math font (used for tick labels for some
> reason) to be specified as completely as the text one.
>
> Cheers,
> Andy
>
>
> On 03/11/14 22:59, Andy Buckley wrote:
> > Hi again,
> >
> > I didn't see any on-list answer, but got an off-list suggestion to use
> > an rc parameter to set a LaTeX preamble. I played around a little and
> > thought I should report on what I found, especially since it seems that
> > there is room for improvement here and I'd be interested to help.
> >
> > Here are the relevant rc params that I have set:
> >
> > "font.size" : 17,
> > "font.family" : "serif",
> > "font.serif" : ["TeX Gyre Pagella"],
> > "pgf.rcfonts" : True,
> > "pgf.preamble": [r"\usepackage{amsmath,amssymb}",
> > r"\usepackage{fontspec}", r"\defaultfontfeatures{Numbers=OldStyle}"],
> >
> >
> > A couple of points to note here:
> >
> > * I'm using the PGF backend -- this ran a bit faster and produced much
> > smaller files than MPL rendering with TeX labels (text.usetex = True).
> > Also, I have data files with labels using macros like \text which MPL
> > MathText doesn't support, so I need to be able to include amsmath.
> >
> > * I've had to set TeX Gyre Pagella rather than Palatino, since this SE
> > question points out that fontspec's Palatino doesn't support small-caps
> > and old-style
> > figures:
> http://tex.stackexchange.com/questions/2994/fontspec-palatino-with-small-caps-and-old-style-figures
> >
> > * Although the backend uses fontspec, I have to import it explicitly in
> > my preamble, because the MPL import and use of fontspec happens _after_
> > where the pgf.preamble key is inserted. Actually, given that I found
> > fontspec doesn't seem to do the right thing for most math fonts, maybe I
> > need to ignore the rcfonts setting and do it a bit more manually if I
> > want full control -- pity.
> >
> >
> > If I ask this configuration to output a PDF file, though, I don't get
> > old-style figures as intended. So I started looking at the generated TeX
> > source by outputting as .pgf and wrapping in a little LaTeX file like
> this:
> >
> > \documentclass[12pt,minimal]{standalone}
> > \usepackage{pgf}
> > \usepackage{amsmath,amssymb}
> >
> > \usepackage{fontspec}
> > \setmainfont[Numbers=OldStyle]{TeX Gyre Pagella}
> >
> > \begin{document}
> > \input{plot.pgf}
> > \end{document}
> >
> > I've attached the result of this with the default MPL .pgf output as
> > plot-mpldefault.pdf. A couple of things are notable in that plot:
> >
> > * Old-style figures are used in the legend (where math mode is not
> > used), but the axis tick labels are not.
> >
> > * The full-size figures on the axes are very thin weight compared to
> > the text axis labels -- I knew something had looked a bit wrong in the
> > default output!
> >
> >
> > Looking in the .pgf file, the reason is clear. The axis ticks are in
> > display math mode, like this:
> >
> >
> >
> \pgftext[x=0.987638in,y=1.778400in,right,]{{\rmfamily\fontsize{17.000000}{20.400000}\selectfont
> > \(\displaystyle 1.05\)}}%
> > ^^^^^^^^^^^^^^^^^^^^^^
> >
> > I removed the \(\displaystyle and \) from the file and then recompiled
> > with and without the Numbers=OldStyle spec in the wrapper, producing the
> > attached plot-textoldstyle.pdf and plot-textlining.pdf figures. In both
> > of these the weight of the tick labels is much more balanced with the
> > other labels than in the default; the old-style or lining figure style
> > is more a matter of personal preference, but I would like to have the
> > option.
> >
> >
> > Apologies for the long email! I'd appreciate any feedback. It seems that
> > there are a couple of small tweaks which would greatly improve the MPL
> > TeX/PGF output, although they probably have side-effects of which I'm
> > unaware:
> >
> > * Don't put tick labels in math mode by default (i.e. unless a special
> > ticker is used). In our previous code, which I'm trying to reproduce in
> > MPL, even exponent-format tick labels were typeset as "10$^\text{exp}$"
> > which automatically gets the font weights and styles correct. Is the
> > current \(\displaystyle etc. specified by the default ticker or is it
> > specific to the PGF backend?
> >
> > * I checked a bit, and fontspec seems a bit ropey when it comes to
> > changing math fonts to match the text font; I had to
> > \usepackage[osf]{mathpazo} before importing fontspec to get a correctly
> > weighted math font. mathspec is maybe worth investigation.
> >
> >
> > Thanks in advance, and thanks for tolerating this plot-cosmetics
> > obsessiveness ;-)
> >
> > Andy
> >
> >
> >
> > On 27/10/14 14:35, Andy Buckley wrote:
> >> Hi,
> >>
> >> I'm using MPL to implement a new plotter for a project has so far been
> >> using a custom-written LaTeX+pstricks script. Despite being slow and a
> >> bit hacky, the output is really quite nice and I want to try and emulate
> >> it as closely as possible via MPL; for example:
> >>
> >>
> https://users.hepforge.org/~buckley/atlas-py8-shower-e/ATLAS_2012_I1094568/d03-x02-y01.pdf
> >>
> >> I more or less have this working, but would really like to be able to
> >> use the "old-style figures" (OSF) numerals with variable baseline (aka
> >> lower-case or text figures cf.
> >> http://en.wikipedia.org/wiki/Text_figures), which give those plots
> quite
> >> a bit of their character.
> >>
> >> Probably this will anyway be possible only with the TeX or PGF backend
> >> to MPL, but what would be the best way to enable OSF figures from MPL?
> >> If I correctly understand the backend, the rc params font.family & e.g.
> >> font.serif are passed to the LaTeX fontspec package -- and in the
> >> fontspec documentation
> >>
> http://mirror.utexas.edu/ctan/macros/latex/contrib/fontspec/fontspec.pdf
> >> it seems that passing the Numbers=(OldStyle) option to the \fontspec
> >> command (or as the arg to \addfontfeature) would be the fontspec version
> >> of, for example, \usepackage[osf]{mathpazo}. Is there a way to pass
> >> options like this to fontspec? In general this would seem a useful thing
> >> to be able to do, since fontspec controls far more than OSFs, but I
> >> couldn't find a discussion of it in the docs.
> >>
> >> Hope you can help; thanks!
> >> Andy
> >>
> >
> >
>
>
> --
> Dr Andy Buckley, Royal Society University Research Fellow
> Particle Physics Expt Group, University of Glasgow / PH Dept, CERN
>
>
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