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POmatplotlib in gtk window with i18n (gettext) support
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copied!<p>I am trying to show a matplotlib plot with axes labeled using gettext's _("label") construct. Trying to create a minimal example, I came up with the following python code. It runs fine through the NULLTranslations() like this:</p> <p>python mpl_i18n_test.py</p> <p>But when I switch to japanese, I get nothing but small squares in the plot -- though on the command-line, the translations look fine:</p> <p>LANG=ja_JP.utf8 python mpl_i18n_test.py</p> <p>Here is the file mpl_i18n_test.py Note that this requires the mona-sazanami font installed, and the various python modules: pygtk, numpy, matplotlib, gettext and polib</p> <p>So my question: Is there some trick to getting matplotlib play nicely with gettext? Am I missing something obvious here? Thank you.</p> <pre class="lang-python prettyprint-override"><code>#!/usr/bin/env python # -*- coding: utf-8 -*- from __future__ import unicode_literals import gtk import numpy as np import matplotlib as mpl from matplotlib.figure import Figure from matplotlib.backends.backend_gtkagg import \ FigureCanvasGTKAgg as FigureCanvas from matplotlib.backends.backend_gtkagg import \ NavigationToolbar2GTKAgg as NavigationToolbar import locale import gettext import polib mpl.rcParams['font.family'] = 'mona-sazanami' def append(po, msg): occurances = [] for i,l in enumerate(open(__file__,'r')): if "_('"+msg[0]+"')" in l: occurances += [(__file__,str(i+1))] entry = polib.POEntry(msgid=msg[0], msgstr=msg[1], occurrences=occurances) print msg print occurances po.append(entry) def generate_ja_mo_file(): po = polib.POFile() msgs = [ (u'hello', u'こんにちは'), (u'good-bye', u'さようなら'), ] for msg in msgs: append(po, msg) po.save('mpl_i18n_test.po') po.save_as_mofile('mpl_i18n_test.mo') return 'mpl_i18n_test.mo' def initialize(): '''prepare i18n/l10n''' locale.setlocale(locale.LC_ALL, '') loc,enc = locale.getlocale() lang,country = loc.split('_') l = lang.lower() if l == 'ja': filename = generate_ja_mo_file() trans = gettext.GNUTranslations(open(filename, 'rb')) else: trans = gettext.NullTranslations() trans.install() if __name__ == '__main__': initialize() # provides _() method for translations win = gtk.Window(gtk.WINDOW_TOPLEVEL) win.connect("destroy", lambda x: gtk.main_quit()) win.connect("delete_event", lambda x,y: False) win.set_default_size(400,300) win.set_title("Test of unicode in plot") fig = Figure() fig.subplots_adjust(bottom=.14) ax = fig.add_subplot(1,1,1) xx = np.linspace(0,10,100) yy = xx*xx + np.random.normal(0,1,100) ax.plot(xx,yy) print 'hello --> ', _('hello') print 'good-bye --> ', _('good-bye') ax.set_title(u'こんにちは') ax.set_xlabel(_('hello')) ax.set_ylabel(_('good-bye')) can = FigureCanvas(fig) tbar = NavigationToolbar(can,None) vbox = gtk.VBox() vbox.pack_start(can, True, True, 0) vbox.pack_start(tbar, False, False, 0) win.add(vbox) win.show_all() gtk.main() </code></pre>

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