Re: [Matplotlib-users] bug?

[Peter G. <pgr...@ge...>]

John Hunter wrote:

>>>>>>"Peter" == Peter Groszkowski <pgr...@ge...> writes:
>>>>>>
>
>    Peter> Hi: The following script:
>
>    Peter> #!/usr/bin/env python from matplotlib.matlab import *
>
>    Peter> figure(1) plot([0],[0]) show()
>
>Thanks, Peter, for alerting me to this problem.  I'm now adding this
>script and several other instances of plotting constants in a variety
>of guises to the unit testing scripts.  I think the following fix will
>work for you.  Replace matplotlib.axes.Axes.add_line with
>
>    def add_line(self, l):
>        "Add a line to the list of plot lines"
>        self._set_artist_props(l)
>        
>        xdata = l.get_xdata()
>        ydata = l.get_ydata()
>        if l.get_transform() != self.transData:
>            xys = self._get_verts_in_data_coords(
>                l.get_transform(), zip(xdata, ydata))
>            self.update_datalim(xys)
>        else:
>            # the data are already using the data coord system - no
>            # transforms necessary
>            minx, maxx = min(xdata), max(xdata)
>            miny, maxy = min(ydata), max(ydata)
>            if minx==maxx:
>                minx -= 1
>                maxx += 1
>
>            if miny==maxy:
>                miny -= 1
>                maxy += 1
>                
>            corners = ( (minx, miny), (maxx, maxy) )
>
>            self.update_datalim(corners)
>
>        l.set_clip_box(self.bbox)
>        self._lines.append(l)
>
>Passes my tests...
>
>
Just a note that the version of the above method in 0.54.1 still gives me:

Traceback (most recent call last):
  File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_gtkagg.py", 
line 75, in callback
    self.draw()
  File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_gtkagg.py", 
line 42, in draw
    agg.draw()
  File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_agg.py", 
line 296, in draw
    self.figure.draw(self.renderer)
  File "/usr/lib/python2.2/site-packages/matplotlib/figure.py", line 
130, in draw
    for a in self.axes: a.draw(renderer)
  File "/usr/lib/python2.2/site-packages/matplotlib/axes.py", line 607, 
in draw
    self.xaxis.draw(renderer)
  File "/usr/lib/python2.2/site-packages/matplotlib/axis.py", line 463, 
in draw
    tick.draw(renderer)
  File "/usr/lib/python2.2/site-packages/matplotlib/axis.py", line 130, 
in draw
    if self.label1On: self.label1.draw(renderer)
  File "/usr/lib/python2.2/site-packages/matplotlib/text.py", line 209, 
in draw
    ismath=self.is_math_text())
  File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_agg.py", 
line 200, in draw_text
    self._renderer.draw_text(
OverflowError: float too large to convert

When doint plot([0],[0]).
The above substitute fixes the problem though...


-- 
Peter Groszkowski         Gemini Observatory
Tel: +1 808 974-2509      670 N. A'ohoku Place
Fax: +1 808 935-9235      Hilo, Hawai'i 96720, USA