Re: [Matplotlib-users] Matplotlib navigation toolbar, save image & image text

[Jon Roadley-B. <jon...@gm...>]

On 6 September 2012 14:20, Benjamin Root <ben...@ou...> wrote:
>
>
> On Thu, Sep 6, 2012 at 5:29 AM, Jon Roadley-Battin
> <jon...@gm...> wrote:
>>
>> Good morning,
>>
>> I have an odd problem with saving plot images via the navigation bar
>> (unsure if it is unique to the navigation bar) if I have added custom
>> text.
>>
>> BACKGROUND.
>> I have a python gui which is used to connect to some hardware as a
>> diagnosis tool. Its a pyGTK program and on one ui tab there is an
>> embeded matplotlib plot.
>> Now some of the signals I plot rather than being a waveform is more of
>> a collection of flags (16bit but thats a by and by)
>> eg:
>>
>>
>>
>>
>> fault
>> 0  = fault1
>> 0 = fault2
>> 1 = fault3
>> 0 = fault4
>>
>>
>>
>> so for this  I can plot this and it will show 2 (possibly changing w.r.t.
>> time).
>> I then hook in via a onpick event such that if I click on a plot I
>> essentially do this:
>>
>>                     self.figtxt =
>> self.fig.text(0.79,0.92,'\n'.join(txt),va='top',
>> bbox=dict(boxstyle='round', facecolor='white',alpha=0.7))
>>                     self.plot_marker =
>> self.plot_area.plot(xdata,ydata,'x',color=event.artist.get_color(),ms=7)
>>
>> ie I put a cross where someone clicked (for indication) and I also
>> create a texxbox which lists human readable version of what bits are
>> set.
>> Great, really helpful in debugging.
>>
>> The issue is if you click on the save image icon on the navigation
>> toolbar it saves the waveform and legend BUT not the additional
>> content (the cross and the textbox).
>>
>>
>> any idea as to how todo this?
>>
>
> What you are describing should work as expected.  Is it possible that you
> could make a simple, self-contained version (hopefully it doesn't need to be
> embedded to reproduce the problem)?  Maybe a modification of one of the
> existing examples in the online docs might be able to reproduce your issue?
>
> Ben Root
>

Good afternoon,
I agree it should work and the examples i have run allow this so this
is why I am looking over my specifics.
The only thing I can see is the examples call to add txt via an axes
entity, I have been doing it via a figure entity.

I am going to re-write to draw on the axis (last time I did this it
didn't display hence going for a figure).

If this doesn't work I shall strip the code down to a minimum example
demonstrating what I am describing