Re: [Matplotlib-users] bug?

[John H. <jdh...@ac...>]

>>>>> "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...

JDH