After reinstall python and TG2, finally I can get things working
Only one issue, this is the code looks like now:
# -*- coding: utf-8 -*-
"""Main Controller"""
from tg import expose, flash, require, url, request, redirect
from pylons.i18n import ugettext as _, lazy_ugettext as l_
from mplibtest.lib.base import BaseController
from mplibtest.model import DBSession, metadata
from mplibtest.controllers.error import ErrorController
import StringIO
import matplotlib
import numpy
from matplotlib.backends.backend_agg import FigureCanvasAgg
from numpy import arange, sin, pi
__all__ = ['RootController']
class RootController(BaseController):
error = ErrorController()
@expose('mplibtest.templates.index')
def index(self):
"""Handle the front-page."""
return dict(page='index')
@expose('mplibtest.templates.about')
def about(self):
"""Handle the 'about' page."""
return dict(page='about')
def expose_matplot_figure(f=None, **render_opts):
def get_fig(result):
if isinstance(result, dict):
fig = result['fig']
del result['fig']
return fig
else:
return result
def get_render_opts(result):
if isinstance(result, dict):
render_opts.update(result)
return render_opts
def wrap_f_with_render_figure(f):
def render_figure(*pargs, **vargs):
# Make the PNG
result = f(*pargs, **vargs)
canvas = FigureCanvasAgg(get_fig(result))
rendered_fig = StringIO.StringIO()
canvas.print_figure(rendered_fig)
return rendered_fig.getvalue()
return expose(content_type="image/png")(render_figure)
if f is None:
# This corresponds to the usage @expose_matplotlib_figure
(dpi=20)
return wrap_f_with_render_figure
else:
# This corresponds to the usage @expose_matplotlib_figure
return wrap_f_with_render_figure(f)
def sample_fig(self):
fig = matplotlib.figure.Figure(figsize=(9, 6))
fig.Name = "Sinewave"
ax = fig.add_subplot(111)
ax.set_xlabel("angle")
ax.set_ylabel("amplitude")
t = arange(0.0, 1.0+0.01, 0.01)
s1 = sin(2*pi*t)
ax.plot(t, s1, color="k")
return fig
@expose_matplot_figure
def sinegraph_default_dpi(self):
return self.sample_fig()
and the url is http://localhost:8080/sinegraph_default_dpi
If you pay attention, the code is almost the same as the
http://docs.turbogears.org/1.0/GenerateFigures#id2 example except for
one line of code in the wrap_f_with_render_figure method:
canvas.print_figure(rendered_fig, **get_render_opts(result))
if I put the second parameter in that line of code I get this error:
NameError: global name 'get_render_opts' is not defined
Seems to be a newbie error to me but I can't figured out how to solved
thanks for the help
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