matplotlib-users Mailing List for matplotlib

Jan Strube wrote:
> Hi List,
> is there a way to store matplotlib figures in something like a native 
> file format?
> I am thinking of something that keeps track of all the objects 
> (patches(?)) in a mpl figure, so that later you could just revisit that 
> figure and change properties.
> Or add/remove objects from the canvas.
> I didn't find anything on the website.
> Thanks,
> Jan
No, there is no mechanism for doing this, although I think it has been 
requested before.
Eric

Hello.
I am new at matplotlib and am trying to modify the
lasso demo so that a line is drawn aound the polygon
made of selected points, and so that this polygon area
is shaded. Ive added the following code to the
callback function but receive the error: CXX : Error
creating object of type N2Py7SeqBaseINS_6ObjectEEE. 
Im sure this is a simple modification. Can anyone
offer suggestions? 
def callback(self, verts):
 ind = nx.nonzero(points_inside_poly(self.xys,
verts))
 for i in range(self.Nxy):
 if i in ind:
 self.facecolors[i] = Datum.colorin
 else:
 self.facecolors[i] = Datum.colorout 
 
 xyo=list()
 for i in ind:
 xyo.append(self.xys[i])
 col = RegularPolyCollection(fig.dpi, 7, sizes = 3,
offsets=xyo, transOffset=ax.transData)
 ax.add_collection(col, autolim=True)
 trans =
transforms.scale_transform(fig.dpi/transforms.Value(72.),fig.dpi/transforms.Value(72.))
 col.set_transform(trans) # the points to pixels
transform
 colors = [colorConverter.to_rgba(c) for c in
('r','g','b','c','y','m','k')]
 col.set_color(colors)
 
 self.canvas.draw_idle()
 self.canvas.widgetlock.release(self.lasso)
 del self.lasso
 
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Hi,
I'm trying to create an application that, among other things, will allow 
me to view an image, zoom into it, and move it around. Essentially what 
I can do by using imshow and show in ipython. However, I've noticed that 
in both interactive usage and my application the image comes up in a 
small set of axes that do not fill up the screen 100% (the image is 
rectangular). Zooming or dragging the image around then causes part of 
it to go off the axes, which is not desirable.
What I would like to do is increase the size of the area where the image 
can be displayed to the area given to the canvas in my application. 
Then, if I drag the image around, part of it won't disappear. However, 
I'm not really sure how to do this. What is the best way to accomplish 
this goal (preferably for non-interactive usage - I'm using the QT4 back 
end)?
Thank you in advance,
David Levitan

Hi List,
is there a way to store matplotlib figures in something like a native file
format?
I am thinking of something that keeps track of all the objects (patches(?))
in a mpl figure, so that later you could just revisit that figure and change
properties.
Or add/remove objects from the canvas.
I didn't find anything on the website.
Thanks,
 Jan