Re: Plotting in C++

This is getting OT, but I'd kind of like to see it get archived somewhere...

João Luís Silva wrote:
> I'm trying to explore new options, and learn new skills. My favorite 
> programming languages are C/C++ and Python. I use Python for small 
> scripts and applications, and C/C++ for everything else. I've started a 
> smallish/medium size open source app in python+pygtk+matplotlib+numpy 
> (laserfoam.sf.net) but I think a large application might be more 
> maintainable in C++.

I think this is not true AT ALL -- C++ is a big 'ol mess and far too 
complicated, and not very flexible, no matter how hard it tries.

> Also, I think C++ is easier to "sell" to the powers 
> that be.

That can be quite true, depending on who the powers that be are. 
However, I like a quote from the wxPython list:

"The only difference that my users see between an app written in Python 
and C++ is that the Python one has more features...and fewer bugs."

> I may write the GUI in 
> python+wxPython, and everything else in C++,

I wouldn't write "everything else" in C++ -- I'd only write what you 
really need to write in C++ - which means only computational code that 
isn't fast enough with numpy, or device drivers or something like that.

> but I was trying to drive  the app from C++.

error in savefig with wxAgg backend

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Re: Show shapes on scatterplot legend?

On Fri, 2008-02-29 at 08:56 -0500, Michael Droettboom wrote:
> I don't believe there is at present.  There was a recent discussion 
> about this on the list, and it's on the radar as something to add for a 
> future release.

Oh well. Good to know it's on the radar. For now I'll just modify my
plots after the fact with the gimp.

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Re: bounding box

On Fri, 29 Feb 2008, David Huard apparently wrote:
> Have you tried pdfcrop ? 

Did not know about it.
<URL:http://www.ctan.org/tex-archive/support/pdfcrop/>
Hmmm, is it legitimate to link to perl code here? 

Thanks,
Alan

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Re: Matplotlib performance

JH> Note that with the clipped line approach I suggested, you can have the
JH> best of both worlds.  Downsampl when N>20000 or some appropriate
JH> number, and plot the full data when you zoom.

Hm.. Good point. I'll try to implement that. Thanks!

Best regards,

--

-- 
Onno Broekmans

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Re: Show shapes on scatterplot legend?

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Labels for ticks on the colorbar?

Hi,

Is is possible to customize the labels for the ticks of the colorbar?  If so,
could someone please explain how this may be accomplished?

Thanks in advance,

John

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Re: Labels for ticks on the colorbar?

On Sat, Mar 1, 2008 at 8:34 PM, John R. Dowdle <jrdowdle@...> wrote:
> Hi,
>
>  Is is possible to customize the labels for the ticks of the colorbar?  If so,
>  could someone please explain how this may be accomplished?

The colorbar method returns a matplotlib.colorbar.Colorbar instance,
which contains a matplotlib.axes.Axes instance named "ax" (this is the
axes of the colorbar).  I'm freestyling here, so there could be a
typo, but here is the idea:

cb = fig.colorbar(something)
for ticklabel in cb.ax.get_yticklabels():
   ticklabel.set_color('red')  # the ticklabels are
matplotlib.text.Text instances

See http://matplotlib.sf.net/matplotlib.text.html and
http://matplotlib.sf.net/matplotlib.axes.html for details on the Text
and Axes methods that are available to you.  You can set all kinds of
attributes on the Text instance (font style, fontsize, font weight,
color, etc...)

JDH

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how load data to Image from String?

Would you please help me ?
I want to load data to Image (QImage) from String or binary String without
using PIL module .
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problem with figure toolbar

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