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I'm a matplotlib newbie and I'm trying to figure out the proper way  
to draw a bar graph with dates along the x-axis.  I am able to draw  
graph that properly uses dates with the plot_date() call and I can do  
a bar graph with bar().  I can even use the following code to get the  
output that I want:

plot_date(dates,units,visible = False)
bar(dates,units,width=5.0)
show()

but it seems to me that plotting and invisible plot_date graph is a  
bit clunky.

What is the proper way to do this with the library?

thanks,
John

FYI, I see this same warning in another wxPython program of mine that
doesn't use mpl or wxmpl, so it seems like it is a wxPython issue.

Solutions are still welcome.

Ryan

On Nov 28, 2007 8:46 AM, Ryan Krauss <rya...@gm...> wrote:
> I just created a small wxmpl example that I really like (attached),
> but when I run it, I get these error messages:
>
> ** (python:18091): WARNING **: Can't create printer "PDF" because the
> id "PDF" is already used
>
> (python:18091): GnomePrintCupsPlugin-WARNING **: The CUPS printer PDF
> could not be created
>
>
> (python:18091): GnomePrintCupsPlugin-WARNING **: The data for the CUPS
> printer PDF could not be loaded.
>
>
> I don't know if this is wxmpl specific, caused by wxPython, or caused
> by matplotlib, but I would like to make it go away.  Any thoughts?
>
> Thanks,
>
> Ryan
>

On Wed, 28 Nov 2007, Ryan Krauss wrote:

> I may be jumping into this conversation way too late, but I really like
> wxmpl.  The one bell and whistle that I love is the click-and-drag box
> zoom available by default.  Attached is my hacked together simple example
> of putting a wxmpl.PlotPanel on a wx.notebook.

Ryan,

   Thank you very much. Our application neither needs nor wants user
interaction. The plots are strictly for display.

Rich

-- 
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I just created a small wxmpl example that I really like (attached),
but when I run it, I get these error messages:

** (python:18091): WARNING **: Can't create printer "PDF" because the
id "PDF" is already used

(python:18091): GnomePrintCupsPlugin-WARNING **: The CUPS printer PDF
could not be created


(python:18091): GnomePrintCupsPlugin-WARNING **: The data for the CUPS
printer PDF could not be loaded.


I don't know if this is wxmpl specific, caused by wxPython, or caused
by matplotlib, but I would like to make it go away.  Any thoughts?

Thanks,

Ryan

I may be jumping into this conversation way too late, but I really
like wxmpl.  The one bell and whistle that I love is the
click-and-drag box zoom available by default.  Attached is my hacked
together simple example of putting a wxmpl.PlotPanel on a wx.notebook.

Ryan

On Nov 27, 2007 11:06 AM, C M <cmp...@gm...> wrote:
>
>
>
> On Nov 27, 2007 11:27 AM, Rich Shepard <rsh...@ap...> wrote:
> >
> > On Mon, 26 Nov 2007, C M wrote:
> >
> >
> > > Basically what I did (sorry if this is too basic, but I'm pretty new to
> > > this and this may jog others to correct deficiencies in this simple
> > > approach) was to:
> >
> >   This is all straightforward and clear. The one statement I've not yet
> > understood is this:
> >
> >
> > >        self.graph = matplotFrame3.PlotPanel(self.panel1 ,xpoints,
> ypoints)
> >
> >   I assume that matplotFrame3 is the name of the module in which you've
> > written PlotPanel(). Is this assumption correct?
> >
>
> Exactly. That is the module which I mention importing in step 4.
>
> >
> >   I'm modifying your approach to suit our application but it seems to be
> the
> > most parsimonious and elegant solution for simple display of plots in a
> > wxPython panel.
> >
> > Thanks,
> >
> >
> >
> >
>  Glad it will help your application.
>
>
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Hi matplotlib users

I am trying to fit a substantial number of subplots into a single plot.
I would therefore like to reduce the font size of my x- and yticks. Some
of the plots contain very large numbers on the y-axis. Using the default
formatting this means that the exponential will be written above the
plot. When the font size of the y-axis is reduced the font size of the
exponential above the plot is not reduced as shown in the example code
below:

import pylab

pylab.figure()
x = [1, 2, 3]
y = [1e13, 2e13, 3e13]
pylab.plot(x,y)
pylab.xticks(fontsize=6)
pylab.yticks(fontsize=6)
pylab.savefig('test.png')

Has anyone got any suggestions on how to reduce the font size of the
exponential as well or is this a bug in matplotlib?

- Jesper

-- 
Jesper Larsen, Ph.D.
Scientist
National Environmental Research Institute 
University of Aarhus
Department of Marine Ecology 
Frederiksborgvej 399 
DK-4000 Roskilde 
Denmark 
tel: +45 46301866
http://www.neri.dk

J.D. Herron wrote:
> The application itself is actually a legacy app whose GUI is done with 
> WTL (windows template library) which is a thin veneer on top of the 
> windows API.  

Darn.

> I have matplotlib set to use wxAgg as the backend.  I'm 
> not inclined to rebuild the entire app with a different GUI toolkit so 
> from your responses it looks like I'm going to have to do something more 
> complicated using wx directly in the scripts in order to make this type 
> of plotting work. 

yup. I'd post on the wxPython lists -- there are way s to pass Window 
Handles into/out of wx, so you may be able to get them to work together. 
I think you can also override the wx mainloop, so that you can deal with 
the two mainloops problem. This is all wx stuff, MPL isn't anything 
special in that regard.

Another option is to use plain Agg back-end, and then render the 
resulting bitmap with WTL. (which I suppose is like building a limited 
feature MTL-Agg back-end)

-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer

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