matplotlib-users Mailing List for matplotlib

Having just had a call from a client saying 'love the new graph, but why is the 
background sky blue' and thinking 'I've never done anything with sky blue in my 
life! - what have I broken', I then proceeded to learn more about Microsoft's 
lack of standards support than I really wanted or could spare the time to do.

The upshot is that transparent png's work perfectly in all tested browsers, as 
well as sundry image viewers/editors but not in IE, sigh!

I wondered why I hadn't struck this problem before so I looked at a few of my 
older, gnuplot generated, transparent png's, which worked perfectly in IE. A 
quick look with gimp shows that gnuplot uses a different technique for 
transparency than does Matplotlib. The transparent colour info for the gnuplot 
image is R:0, G:0, B:0, Alpha:0, Index:254 while for Matplotlib it is R:255, 
G:255, B:255, Alpha:0, with no Index.

Now I don't know enough (er, anything) about the low level detail of the png 
format, but I wonder if it is possible to achieve the same result in Matplotlib 
or do I need to post-process (using ImageMagick or similar) to generate the same 
style of png or possibly gif's?

Robert

>>>>> "Fl=E1vio" =3D=3D Fl=E1vio Code=E7o Coelho <fcc...@fi...> wr=
ites:

    Fl=E1vio> I just want to let you know that neither 'cla', 'clf' nor
    Fl=E1vio> 'figure' solved the issue but 'close' did it.  I must
    Fl=E1vio> point out that the only element that was being carried out
    Fl=E1vio> from figure to figure was the colorbar, not the plot
    Fl=E1vio> itself. Apparently 'close' is the only one of these
    Fl=E1vio> functions that gets rid of the colorbar.

Yep, cla would not be expected to do anything, since both the image
and colorbar are spearate axes.  So cla, clf and close are working as
advertised -- and that's a good thing :-)

JDH

On Monday 14 February 2005 12:24, John Hunter wrote:
> >>>>> "Flávio" == Flávio Codeço Coelho <fcc...@fi...> writes:
>
>     Flávio> I just want to let you know that neither 'cla', 'clf' nor
>     Flávio> 'figure' solved the issue but 'close' did it.  I must
>     Flávio> point out that the only element that was being carried out
>     Flávio> from figure to figure was the colorbar, not the plot
>     Flávio> itself. Apparently 'close' is the only one of these
>     Flávio> functions that gets rid of the colorbar.
>
> Hi Flávio,
>
> clf *should* work.  Could you send me a script which includes a clf
> that replicates the problem so I can fix it.  Thanks.
>

Hi John,

 clf does work, sorry. Its cla that does not (though I am not sure it should 
serve this purpose...)

i am sending the code attached
 

>>also, how am i going to assign to a variable anything that a user
>>inputs to a wxTxtCtrl?
>>
>>any help would greatly be appreciated. thanks and more power

You've bitten off quite a bit here all in one part. Start by looking at 
the wxPython Demo and Wiki for various code samples, and try to build a 
little app that just takes a value for input and does something with it. 
In fact, look at the "embedded in wx" matplotlib samples, there may be 
one that takes a value and generates a plot based on it.

As a hint, you'll need to use wxTextCtrl.GetValue() to get the input 
value, and convert it to a number with float().

As you start small, ask questions on the wxPython mailing list, we're 
very helpful there!

-Chris

-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

Is it possible to include a marker from one or more scatter plots in the legend?

Robert

On Fri, 28 Jan 2005 15:18:53 +0800, Jan Rienyer Gadil <jr...@gm...> wrote:
> i'm currently using python 2.3(enthought edition) on win 2000/xp.
> i'm using boa constructor on the GUI part and matplotlib 0.71 on
> plotting the graph.
> 
> i am using an MDIParentFrame. one of the child frame will be used for
> the table part. then another child frame will be used to show the
> graph, how am i going to do this? will i just import the child frame
> containing the tables and then i'll be able to just get the data from
> the table and use it to plot a graph?
> how am i going to assign to a variable each input to the table?
> can you please show me a sample code to do this?
> i'm a little lost since i'm a bit new to python.
> 
> also, how am i going to assign to a variable anything that a user
> inputs to a wxTxtCtrl?
> 
> any help would greatly be appreciated. thanks and more power
> 

anybody could help me on this?