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From: Mauro C. <mau...@gm...> - 2008-11-20 20:31:33
Attachments:
Gaia.py
cities.csv
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Dear ALL, Enclosed is an sample application I put together (partially using wxGlade) that is a first attempt at providing a working example of a GUI frontend with wxPython and Matplotlib/Basemap. The application consists of two panels, separated by a splitter. The left panel has a notebook with two pages, which have, respectively, a listbox and a read-only multine text control. The right panel has a figure object created at runtime, to which a basemap object is attached. The application reads comma-delimited data files of geographic coordinates (in decimal format) selected by the user, appending them to the listbox. When a file is selected on the list, the points are plotted on the basemap displayed in the panel to the right. Well, at least it should! It turns out that the map is correctly displayed, but it then fills almost the whole parent window, overlapping the left panel where the notebook with the listbox and the text control should appear! This illustrates one of the worst (in my opinion) things about wxPython, that is the handling of "sizers" to correctly place the widgets on an application window. I have commented the parts of the code where the map is created, so that one can see clearly what happens with and without the map plot. Just uncomment these parts to see the map displayed (with a toolbar properly placed, at least under Linux). If someone can help me with this, this sample application could provide a useful skeleton to build programs which integrate Matplotlib/Basemap with wxPython (incidentally, this sample application bears a very slight resemblance to Google Earth... :)). I am, of course, donating it to the community. Thanks in advance! With best regards, -- Dr. Mauro J. Cavalcanti Ecoinformatics Studio P.O. Box 46521, CEP 20551-970 Rio de Janeiro, RJ, BRASIL E-mail: mau...@gm... Web: http://studio.infobio.net Linux Registered User #473524 * Ubuntu User #22717 "Life is complex. It consists of real and imaginary parts." |
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From: Christopher B. <Chr...@no...> - 2008-11-20 22:44:06
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Mauro Cavalcanti wrote: > Well, at least it should! It turns out that the map is correctly > displayed, but it then fills almost the whole parent window, > overlapping the left panel where the notebook with the listbox and the > text control should appear! This illustrates one of the worst (in my > opinion) things about wxPython, that is the handling of "sizers" to > correctly place the widgets on an application window. well, I love sizers -- but they do take a while to wrap your brain around. Your difficulty probably stems from using a combination of wxGlade and handwritten code. Also, I don't know if wxGlade forces you to do it this way, but you have a whole bunch of stuff all nested in the Frame, when it would be better designed if each component was it's own class. anyway, I think your problem is: # ----- UNCOMMENT THE LINES BELOW TO DRAW THE MAP #self.figure = Figure(figsize=(10,5)) #self.canvas = FigureCanvas(self, -1, self.figure) you've given "self" as the parent of your FigureCanvas, when it needs to be parented by the Panel it goes on, which I think is self.PlotPanel, so the above line should be: self.canvas = FigureCanvas(self.PlotPanel, -1, self.figure) One thing wx does do "wrong" is let you put a control on one parent, then Add it to a sizer attached to a different parent -- it should probably raise an error when you do that. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chr...@no... |
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From: Mauro C. <mau...@gm...> - 2008-11-20 23:08:25
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Dear Chris, Thank your very much for your prompt reply. 2008/11/20 Christopher Barker <Chr...@no...>: > well, I love sizers -- but they do take a while to wrap your brain around. I love Python *and* wxPython/wxWidgets -- but having worked several years with RAD tools like Visual Basic and (much better) Borland Delphi, I find all available GUI builders for Python very limited (and sizers are among these perceived limitations). > Your difficulty probably stems from using a combination of wxGlade and > handwritten code. Also, I don't know if wxGlade forces you to do it this As a matter of fact, wxGlade forces one to do this. I usually do not like (or use) code generated by wxGlade, but for rapid prototyping I find it to be better than, for example, Boa Constructor (which is as huge and slow is the boa snakes themselves). > you've given "self" as the parent of your FigureCanvas, when it needs to be > parented by the Panel it goes on, which I think is self.PlotPanel, so the > above line should be: Sure, it worked, but I still have problems with properly sizing the figure. This I could amend by declaring: self.figure = Figure() instead of self.figure = Figure(figsize=(10,5)) and: self.ax = self.figure.add_subplot(111) instead of self.ax = self.figure.add_axes([0,0,1,1]) However the figure is still not properly sized when the window is maximized (but this is obviously another problem with my handling of wxPython classes). I hope to have this example up and running as it may be a useful addition to the collection of examples in the Basemap module, saving a lot of time for others! With best regards, -- Dr. Mauro J. Cavalcanti Ecoinformatics Studio P.O. Box 46521, CEP 20551-970 Rio de Janeiro, RJ, BRASIL E-mail: mau...@gm... Web: http://studio.infobio.net Linux Registered User #473524 * Ubuntu User #22717 "Life is complex. It consists of real and imaginary parts." |
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From: Stef M. <ste...@gm...> - 2008-11-21 00:27:41
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Mauro Cavalcanti wrote: > Dear Chris, > > Thank your very much for your prompt reply. > > 2008/11/20 Christopher Barker <Chr...@no...>: > > >> well, I love sizers -- but they do take a while to wrap your brain around. >> > > I love Python *and* wxPython/wxWidgets -- but having worked several > years with RAD tools like Visual Basic and (much better) Borland > Delphi, I find all available GUI builders for Python very limited (and > sizers are among these perceived limitations). > > I agree (coming from Delphi), they either don't work or are too limited. For wxPython I developed a very simple method, which even has the F12 function ;-) http://mientki.ruhosting.nl/data_www/pylab_works/pw_gui_support.htm code can be downloaded here http://code.google.com/p/pylab-works/downloads/list btw I would love to see your Basemap, (but as I'm in the iddle of releasing a large project based on an old version of MatPlatLib, so I don't dare to update), are there any screenshots ? thanks, Stef Mientki |
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From: Mauro C. <mau...@gm...> - 2008-11-21 02:45:33
Attachments:
Gaia.py
screenshot.png
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Dear Stef, Thanks for the message. Your PyLab-Works looks really great (and I liked the interface). I could not progress much further than applying the last advice from Chris Baker, which at least allowed the plot to be shown in its correct place. Indeed, the sample applications now *almost* works, except when the window is resized. Also, the points plotted on the map only appears when the map panel is resized using the splitter (because in this case, the entire panel is redrawn and it seems that this is the missing trick). I am attaching the current version of source code plus a screenshot. With best regards, 2008/11/20 Stef Mientki <ste...@gm...>: > I agree (coming from Delphi), they either don't work or are too limited. > For wxPython I developed a very simple method, which even has the F12 > function ;-) > http://mientki.ruhosting.nl/data_www/pylab_works/pw_gui_support.htm > code can be downloaded here > http://code.google.com/p/pylab-works/downloads/list > > btw I would love to see your Basemap, > (but as I'm in the iddle of releasing a large project based on an old > version of MatPlatLib, > so I don't dare to update), > are there any screenshots ? > > thanks, > Stef Mientki -- Dr. Mauro J. Cavalcanti Ecoinformatics Studio P.O. Box 46521, CEP 20551-970 Rio de Janeiro, RJ, BRASIL E-mail: mau...@gm... Web: http://studio.infobio.net Linux Registered User #473524 * Ubuntu User #22717 "Life is complex. It consists of real and imaginary parts." |
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From: Tim M. <tim...@gm...> - 2008-11-25 21:12:27
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Hello! > I am attaching the current version of source code plus a screenshot. I would like to ask you why you are trying to implement this by yourself in wxPython/matplotlib. There are already two pythonised applications that may be used for your purpose. And they are aware of the projections and different geographical formats: * QGIS with Pythons libary and plugins: http://qgis.org/content/view/145/113/ * Thuban: http://thuban.intevation.org/ Maybe this could save you some work/time. Kind regards, Timmie |
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From: Mauro C. <mau...@gm...> - 2008-11-25 23:30:12
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Dear Tim, Thanks for your message. I am not just "trying", I am indeed implementing a software package for species distribution mapping and biogeographic analysis, using wxPython/Matplotlib. And, by the way, it is going quite well. Both Thuban and QGis, as generalized implementations of GIS, are far from adequate for my needs (and of fellow conservation biologists). Hope this helps. Best regards, 2008/11/25 Tim Michelsen <tim...@gm...>: > Hello! > >> I am attaching the current version of source code plus a screenshot. > > I would like to ask you why you are trying to implement this by yourself > in wxPython/matplotlib. > > There are already two pythonised applications that may be used for your > purpose. And they are aware of the projections and different > geographical formats: > * QGIS with Pythons libary and plugins: > http://qgis.org/content/view/145/113/ > > * Thuban: http://thuban.intevation.org/ > > Maybe this could save you some work/time. > > Kind regards, > Timmie > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Dr. Mauro J. Cavalcanti Ecoinformatics Studio P.O. Box 46521, CEP 20551-970 Rio de Janeiro, RJ, BRASIL E-mail: mau...@gm... Web: http://studio.infobio.net Linux Registered User #473524 * Ubuntu User #22717 "Life is complex. It consists of real and imaginary parts." |
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From: Tim M. <tim...@gm...> - 2008-11-26 22:34:25
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Hello Mauro, > I am not just "trying", Sorry for "disregarding" your using the term trying. I am indeed implementing a software package > for species distribution mapping and biogeographic analysis, using > wxPython/Matplotlib. Thanks for being more specific. There is another program aiming at /similar/ goals: http://www.metamodellers.com/epigrass.html But this is not my domain of work... > And, by the way, it is going quite well. My crongrats! > Both Thuban and QGis, as generalized implementations of GIS, are far > from adequate for my needs (and of fellow conservation biologists). I just thought of there because they easyly convert CSV into geographical data. In case you are after format conversion you may see: ogr2ogr. > Hope this helps. Vice versa. I thought that my ideas my be useful. Nevertheless, have all possible sucess! Kind regards, Timmie |
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From: Stef M. <ste...@gm...> - 2008-11-21 20:05:40
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hello Mauro, On Fri, Nov 21, 2008 at 3:45 AM, Mauro Cavalcanti <mau...@gm...>wrote: > Dear Stef, > > Thanks for the message. Your PyLab-Works looks really great (and I > liked the interface). > I'm glad you liked it, hope to release PyLab_Works this month. > > I could not progress much further than applying the last advice from > Chris Baker, which at least allowed the plot to be shown in its > correct place. > > Indeed, the sample applications now *almost* works, except when the > window is resized. Also, the points plotted on the map only appears > when the map panel is resized using the splitter (because in this > case, the entire panel is redrawn and it seems that this is the > missing trick). maybe you could send an explicit resize event to the panel or to the splitter: self.Panel_Bottom.SendSizeEvent () > > > I am attaching the current version of source code plus a screenshot. > nice screenshot, thanks. Stef > > With best regards, > > 2008/11/20 Stef Mientki <ste...@gm...>: > > I agree (coming from Delphi), they either don't work or are too limited. > > For wxPython I developed a very simple method, which even has the F12 > > function ;-) > > http://mientki.ruhosting.nl/data_www/pylab_works/pw_gui_support.htm > > code can be downloaded here > > http://code.google.com/p/pylab-works/downloads/list > > > > btw I would love to see your Basemap, > > (but as I'm in the iddle of releasing a large project based on an old > > version of MatPlatLib, > > so I don't dare to update), > > are there any screenshots ? > > > > thanks, > > Stef Mientki > > > -- > Dr. Mauro J. Cavalcanti > Ecoinformatics Studio > P.O. Box 46521, CEP 20551-970 > Rio de Janeiro, RJ, BRASIL > E-mail: mau...@gm... > Web: http://studio.infobio.net > Linux Registered User #473524 * Ubuntu User #22717 > "Life is complex. It consists of real and imaginary parts." > |
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From: Mauro C. <mau...@gm...> - 2008-11-21 20:34:57
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Dear Stef, 2008/11/21 Stef Mientki <ste...@gm...>: > > maybe you could send an explicit resize event to the panel or to the > splitter: > self.Panel_Bottom.SendSizeEvent () Yes, it worked! I just was not aware of this SendEvent() in wxPython, it is handy. Now, I have to work out the correct display of the map when the window is resized. Will also use a CheckList control in place of the current Listbox, so that plotting of points on the map can be turned on or off by the user. Of course, this is just a sample demonstration (but just plot a "Blue Marble" image on the map panel and use an orthographic projection and you can see what this humble sample will look like... ). Thanks a lot for your help. With best regards, -- Dr. Mauro J. Cavalcanti Ecoinformatics Studio P.O. Box 46521, CEP 20551-970 Rio de Janeiro, RJ, BRASIL E-mail: mau...@gm... Web: http://studio.infobio.net Linux Registered User #473524 * Ubuntu User #22717 "Life is complex. It consists of real and imaginary parts." |
