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Hi,

   I am using matplotlib to visualize my data, but the data sometimes have
several sets.
Can I plot each set as usual to a EPS file, and combine these EPS file into
a single ps file,
each page of this ps file is only one EPS file I got before.


Thanks.

Lingyun

Hi,

Am I right if I presume that line No. 4 in the second listing in
http://www.scipy.org/Cookbook/Matplotlib/Show_colormaps should read
(0.5, 0.1, 0.7) in order to match the description? But then, of course
the example plot would look different.

I hesitate to change what I don't fully understand ...

Christian

On 9/11/07, Jose Gomez-Dans <jgo...@gm...> wrote:
> Hi Patrick,
>
> Thanks for your message!
>
> On 9/10/07, Patrick Bradley <pat...@gm...> wrote:
> > lg = legend()
> > lg.get_frame().set_fill(False)
>
> Mmmm, this is OK, let's say I wanted a figure with a transparent
> background. I can't find a set_fill() method for this class. I have
> tried the facecolor attribute, but no luck. I think I got this right.
> I am using the Agg backend (does this make a difference?). The files
> are RGBA pngs, but the alpha channel is always 255, so my background
> is always white, as opposed to transparent.
>
> Am I doing something wrong? I am using matplotlib 0.90.0. Here's some
> sample code

You can turn off the figure frame entirely

  fig = figure(frameon=False)

Or you can leave the frame on, but set the alpha channel

  fig = figure()
  fig.figurePatch.set_alpha(0.1)

Does that help?  Note you may want to set the alpha of the axesPatch as well

  ax.axesPatch.set_alpha(0.5)

you can do the same for legends, where l is a Legend instance

  l.legendPatch.set_alpha(0.5)

JDH

Hi Patrick,

Thanks for your message!

On 9/10/07, Patrick Bradley <pat...@gm...> wrote:
> lg =3D legend()
> lg.get_frame().set_fill(False)

Mmmm, this is OK, let's say I wanted a figure with a transparent
background. I can't find a set_fill() method for this class. I have
tried the facecolor attribute, but no luck. I think I got this right.
I am using the Agg backend (does this make a difference?). The files
are RGBA pngs, but the alpha channel is always 255, so my background
is always white, as opposed to transparent.

Am I doing something wrong? I am using matplotlib 0.90.0. Here's some
sample code

import pylab
FaceColor=3D(1.0, 1.0, 1.0, 0.0 )
fig =3D pylab.figure(figsize=3D(6,1.5))
ax =3D fig.add_axes([0.05, 0.4, 0.9, 0.5])
cmap =3D mpl.cm.jet
norm =3D mpl.colors.Normalize(vmin=3D0, vmax=3D1)
cb =3D mpl.colorbar.ColorbarBase(ax, cmap=3Dcmap, \
=09=09=09=09=09=09=09norm=3Dnorm,orientation=3D'horizontal' )
cb.set_alpha(0.0)
fig.set_facecolor(FaceColor)
pylab.savefig( "fichero.png", dpi=3D72, facecolor=3DFaceColor)

cheers!
Jos=E9