Re: [Matplotlib-users] close a figure after show , when plotting many figures from script- using matplotlib.pyplot.figure

[hari j. <ha...@gm...>]

Hi Sterling ,

Thanks for your email. I definitely think I was running into issues with
the figure updating while it was trying to draw , constantly. I
experimented with sleep ..but didnt try hard enough to get it to work.

That said,  I have a very nice solution to my problem using the
wx.aui.AuiNotebook
 borrowed from example wx5 (
http://matplotlib.org/examples/user_interfaces/embedding_in_wx5.html)

# MY SOLUTION

I now have a single Plot wx.Panel which then encloses a wx.aui.Notebook
just like in the wx5 example link above.
Once I have finished processing the data . I initialize the plotter just
like in the example above.  I have a for loop that goes over all 384 data
sets and then adds a page to the Notebook for every dataset.

The result is a 384 , tabbed Notebook , where each tab is a fully
interactive matplotlib plot , created like before.

def do_my_plot(well_id, plotter_from_main):
    my_plotter = plotter_from_main
    # Here is where I add a page to the Notebook and get its current axis
    ax = plotter.add("figure %s" % well_id).gca()
    par1 = ax .twinx()
    par2 = ax.twinx()
.............................................and -so on


The neatest thing of the final Notebook is that , although it takes about a
minute to appear at first call to frame.Show()..
After  that it is very performant.

 Importantly I can quickly scroll through all the 384 tabs ( or pages in
the notebook) using CTRL-TAB to go forward and CTRL-Shift_TAB to go
backward. This ability to navigate is a huge plus for me. The Navigation is
actually very fast and "redraws" are nearly instantaneous.


I will still try and get the "single figure that refreshed " approach as I
originally wanted,  using the techniques  you , Ben and Damon suggested .
In many cases I dont need to have a 384 tabbed frame..and can do with a
plot that refreshes every few seconds so I know that everything went right.

Thanks everyone for all your help..Ill get back to the group once I get the
repaint within a single frame to work..

Hari










On Wed, Oct 17, 2012 at 5:38 PM, Sterling Smith <sm...@fu...>wrote:

> Hari,
>
> While I am not intimately acquainted with the inner working of the
> interactive matplotlib functionality, I have seen that it tries to not
> update the figure if you ask for some change to it while it is trying to
> update the figure.  That sounds circular, but oh well.
>
> Perhaps you could have each analysis open a new figure, and have an if
> statement to close 5 (or 10...) figures ago.
>
> Another subtlety that I have noticed (and perhaps read somewhere) is that
> there could be a difference in behavior between having interactivity set in
> the matplotlibrc file and using the ion() call after having set
> interactive: False in the matplotlibrc file.
>
> Another solution might be a time.sleep after each update of the figure.
>
> (Note that with ion(), the command for updating the figure is pylab.draw,
> which may need to be issued after each case - the pylab/pyplot functions
> usually have a draw_if_interactive call in them.)
>
> -Sterling
>
> PS If I am causing more confusion than help, please let me know.
>
>
> On Oct 17, 2012, at 10:54AM, hari jayaram wrote:
>
> > Thanks Benjamin, Sterling and Damon  for your prompt  help
> >
> > However I am still not able to achieve what I wanted .
> >
> > I can get the headless script to work just great where it saves all the
> figures and I can view them after the script is done running.
> >
> > But somehow when I try the figure number method that Sterling suggested
> , along with the axis clear and redraw method (Damon) , or the decouple and
> clear and then plot method (Benjamin Root) : I get the plot just spinning
> with a blue circle on Windows 7 and the script just chugs merrily along.
> >
> >
> > I think part of the problem was that I was wrong in the way I stated my
> application. Each of the 384 data processing steps takes a few seconds..and
> not a minute as I had indicated.  I tried with both ion() and ioff() and
> giving the figure a number , which stays constant and clearing the  axis
> everytime before plotting. But I get a spiining blue circle in Windows.
> >
> > I will try and cookup a test case , and send to the list , to reproduce
> what I am seeing. it may still be that I am calling pylab , pyplot
> incorrectly and hence not getting the continuously changing figure that
> your suggestions should give me.
> >
> > hari
> >
> >
> >
> >
> > Using plt.ion() or plt.ioff() causes a spinning blue-ball on
> windows..while the rest of the script continues.
> > If I use the figure number trick. I get the first figure displayed.
> >
> > On Tue, Oct 16, 2012 at 12:15 PM, Benjamin Root <ben...@ou...> wrote:
> >
> >
> > On Tue, Oct 16, 2012 at 11:25 AM, hari jayaram <ha...@gm...>
> wrote:
> > Hi
> > I am a relative newbie to matplotlib.
> >
> > I have a python script that handles a dataset that comprises 384 sets of
> data.
> >
> > At the present moment , I read in a set of data - process it - and the
> create a figure using code shown below.
> > I am using windows with the default backend ( I think I set it to wx).
> >
> > When I run the program, figure after figure shows up..the program
> continues from well to well plotting the figure. I can close the figure
> window using the X on the right -hand side..while the program chugs along.
> >
> > Is there a way to just recycle the figure object , so that the plot
> shows up for a brief second and refreshes when the next calculation is
> complete. Each process_data function , takes a few minutes.
> >
> > Alternatively I just want to close the figure object I show after a
> brief lag.  I am OK if that happens instantaneously..but I dont know how to
> achieve this.
> > Do I have to use the matplotlib.Figure object to achieve this
> functionality
> >
> > Thanks
> > Hari
> >
> >
> >
> > Hari,
> >
> > To recycle the figure, try the following:
> >
> >
> >
> > import matplotlib.pyplot as plt
> >
> > def do_my_plot(par1, par2, well_id):
> >     processed_data_object = processed_dict[well_id]
> >     # Plot all the data
> >     par1.plot(processed_data_object.raw_x,processed_data_object.raw_y).
> >     par2.plot(....
> >     # finally
> >     plt.show()
> >     # I tried  fig.clf()
> >
> >
> > def plot_and_process_data():
> >     plt.ion()  # Turn on interactive mode
> >     fig = plt.figure(figsize=(7,7)
> >     ax = fig.add_subplot(1,1,1)
> >     par1 =ax.twinx()
> >     par2 = ax.twinx()
> >
> >     for well_id in list_of_384_well_ids:
> >          par1.cla()
> >          par2.cla()
> >          process_data(well_id)
> >          do_my_plot(par1, par2, well_id)
> >
> > Note, this is completely untested, but it would be how I would go about
> it at first.  The "plt.ion()" turns on interactive mode to allow your code
> to continue running even after the plot window appears (but does not end
> until the last window is closed.).  Of course, another approach would
> simply be to do "fig.savefig()" after every update to the figure and never
> use show() and ion() (essentially, a non-interactive head-less script).
> >
> > Hopefully, this helps.
> > Ben Root
> >
> >
> >
> ------------------------------------------------------------------------------
> > Everyone hates slow websites. So do we.
> > Make your web apps faster with AppDynamics
> > Download AppDynamics Lite for free today:
> >
> http://p.sf.net/sfu/appdyn_sfd2d_oct_______________________________________________
> > Matplotlib-users mailing list
> > Mat...@li...
> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>