matplotlib-users Mailing List for matplotlib

Hi fred,

On 04/08/07, fred <fr...@gm...> wrote:
> Well, running mpl examples (say image_demo.py),
> you can see the point coordinates under the pointer.
> Good point ;-)
>
> I would like to have the scalar value under the pointer to be displayed
> too.
>
> How could I do this ?

Since all sorts of data can be displayed in am mpl window (e.g. a
plot, a contour...) you have to tell it how to access the correct
scalar value to display. You could do this with the
motion_notify_event. Register it during init, something like:

self.canvas.mpl_connect('motion_notify_event', self.mouse_move_callback)

then in mouse_move_callback:

def mouse_move_callback(self, evt):
        xpos, ypos = evt.xdata, evt.ydata
        val = self.data[numpy.floor(xpos), numpy.floor(ypos)]
        status_str = "x: %4.2f  y: %4.2f   I:%4.2f" \
                  % (xpos, ypos, val)
        self.SetStatusText(status_str)

where data is your image variable. This works in a wx.Frame object,
which has a SetStatusString method for displaying the values. I'm sure
you could find an equivalent in your traits app.

Hope that helps,

Gus.
-- 
AJC McMorland, PhD Student
Physiology, University of Auckland

John Hunter <jdh2358@...> writes:

> On 8/3/07, fred <fredmfp@...> wrote:
>
> > >>> Is there any tarball for ml archives ?
> 
> Unfortunately a lot of the mail archive search algorithms are pretty
> poor.  I subscribe over gmail, which has decent search, but I do not
> have the entire archives.  I have a lot of the archives, particularly
> the earlier years when I was using a UNIX mail server and client, but
> now that I have moved over to gmail I do not have the recent archives
> in flat file or tarball.

You can download the recent archives from gmane.org (though all email 
addresses are encrypted):

http://gmane.org/export.php

I wonder if there is any similar possibility at sourceforge?

The gmane archives only go back to 2004 or so, so it would be
nice if you (or other early developers) could upload older
archives to gmane. The instructions are at 

http://gmane.org/import.php 

but basically all you have to do is put up a unix-style mbox file
somewhere and send the URL to the gmane administrators. Importing
does have the effect that old article numbers are no longer
valid, and thus the read/unread status in newsreader programs is
reset; thus it would be a good idea to gather all old archives
first and then do just one upload, and warn readers in advance.

-- 
Jouni

John Hunter a écrit :
> But you can just ask us -- maybe we can help.
>   
Ok.

Well, running mpl examples (say image_demo.py),
you can see the point coordinates under the pointer.
Good point ;-)

I would like to have the scalar value under the pointer to be displayed
too.

How could I do this ?

In fact, I use mpl in a traits app,
which looks like this:
http://fredantispam.free.fr/mpl.png

In my traits app, no point coords under pointer are displayed.

Am I missing something obvious ?

snippet code:
        da = self.display.axes
        self.img = da.imshow(self.current_data.array,
                             vmin=self.vmin, vmax=self.vmax,
                             cmap=self.cmap,
                             interpolation=self.interpolate_colormap_method,
                             extent=extent,
                             origin=self.origin,
                             alpha=self.opacity)
        self.display.figure.canvas.draw()

TIA.

Cheers,

-- 
http://scipy.org/FredericPetit

On 8/3/07, fred <fr...@gm...> wrote:

> >>> Is there any tarball for ml archives ?
> >>>
> >>>
> >> You can search the user and developer archives here:
> >>
> >> http://sourceforge.net/mail/?group_id=80706
> >>
> Yes, but with "probing" keyword,
> results are not relevant:
> "Could not fire up pylab in Japanese XP"
>
> I can't believe that no one has asked before about this issue ;-)

Unfortunately a lot of the mail archive search algorithms are pretty
poor.  I subscribe over gmail, which has decent search, but I do not
have the entire archives.  I have a lot of the archives, particularly
the earlier years when I was using a UNIX mail server and client, but
now that I have moved over to gmail I do not have the recent archives
in flat file or tarball.

But you can just ask us -- maybe we can help.

JDH

Michael Droettboom a écrit :
> Darren Dale wrote:
>   
>> On Friday 03 August 2007 08:03:31 am fred wrote:
>>   
>>     
>>> Is there any tarball for ml archives ?
>>>     
>>>       
>> You can search the user and developer archives here:
>>
>> http://sourceforge.net/mail/?group_id=80706
>>     
Yes, but with "probing" keyword,
results are not relevant:
"Could not fire up pylab in Japanese XP"

I can't believe that no one has asked before about this issue ;-)


-- 
http://scipy.org/FredericPetit

Darren Dale wrote:
> On Friday 03 August 2007 08:03:31 am fred wrote:
>   
>> Is there any tarball for ml archives ?
>>     
>
> You can search the user and developer archives here:
>
> http://sourceforge.net/mail/?group_id=80706
>   
It's also archived on gmane, which has a different interface that some 
prefer:

http://dir.gmane.org/gmane.comp.python.matplotlib.general

Or, in a bind, sometimes using Google with "matplotlib-users" in the 
search string can return different results.

Cheers,
Mike

On Friday 03 August 2007 08:03:31 am fred wrote:
> Is there any tarball for ml archives ?

You can search the user and developer archives here:

http://sourceforge.net/mail/?group_id=80706

Hi,

Is there any tarball for ml archives ?

In fact, I'm looking for something related to values probing (with a 
pointer,
for example).

So I want, before asking, to have a look in the archives.

Cheers,

-- 
http://scipy.org/FredericPetit