[Matplotlib-users] Problem with dashes

[Yann Le Du <yan...@no...>]

Hello,

I've just discovered matplotlib-0.40 (with linux), and going through the
tutorial, I get an error (pasted at the end of email) when using dashes in
the "Multiple lines with one plot command" example.

If instead of putting :

plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^')

I put :

plot(t, t, 'r-', t, t**2, 'bs', t, t**3, 'g^')

it works fine.

Maybe someone can help ?

Y

========

/usr/lib/python2.3/site-packages/matplotlib/backends/backend_gtk.py in 
set_dashes(self, dash_offset, dash_list)
    175         dpi = self.drawable.dpi.get()
    176         if dash_list is not None:
--> 177             dashes = dash_list*dpi/72.0
    178             self.gdkGC.line_style = gdk.LINE_ON_OFF_DASH
    179             dl = [int(math.ceil(val)) for val in dash_list]

TypeError: unsupported operand type(s) for /: 'array' and 'float'