Re: [matplotlib-devel] canvas objects
On Fri, Jul 06, 2007 at 05:31:58PM -0400, Paul Kienzle wrote: > On Fri, Jul 06, 2007 at 10:15:48AM -0500, John Hunter wrote: > > On 7/6/07, Paul Kienzle <[EMAIL PROTECTED]> wrote: > > > Instead I would like to start by splitting the current pick method > > > into two parts: > > >contains(event,picker) which returns truth value,details > > >pick(event) which generates the current pick event > > > > I don't really understand the contains part -- can you elaborate a little > > bit? > > > > I would definitely be amenable to accepting patches that improve the > > current API :-) > > I have an initial patch against CVS available which implements > contains() for most classes. Legend is too complex for simple hacks. > I have a number of questions regarding details of implementation, > in particular determining sizes of things on the plot. > > The question now is what to do with it? I can post it to the patch > tracker on sourceforge, but I'm hesitant to do so since it still > has issues. Do you want it there or on the list? I submitted the 'contains' patch to the patch tracker on sourceforge. I've worked out most of the issues, including selecting lines instead of just points. I still haven't addressed legend picking, and I don't know how to handle line offsets. I'm also unhappy with relying on a cached renderer for some of the size checks (e.g., text extents). One solution is to send this along with the 'contains' test, though that would mean changing the interface to pick. Any other suggestions? In backend_bases.FigureCanvasBase.__init__ there is an "if False" statement. Turn it to True and all objects on every graph will be highlighted as the mouse hovers over them and restored when it moves away. I worked through many of the demos in the repository to check that the various objects are recognized. Sorry about the size of the patch --- I wanted to keep the system in a working state so I had to do everything. Also I spent some time writing __str__ methods for a lot of the artists so that it was easier for me to debug. Let me know if you want these stripped and sent as a separate patch. - Paul - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] cairo patch #4: Fix draw_arc
Carl, I've not been following the matplotlib mailing lists recently, but I came across your blog and had a look at the cairo patches. It looks like all the cairo patches are against some old version of matplotlib. patch #2 enable clipping I enabled clipping in Jan-2007. patch #1 for 'snapping' The patch did not reach the mailing list (?). But in a later mail you mention that snapping smooth, curved user data is a really bad idea. So the patch should probably not be applied. patch #3 snap dash lengths, relies on patch #1. I think this patch has the problems of patch #1 - if the dashes are being used to draw axes or gridlines then snapping is OK. But if the dashes are for user data then snapping is not necessarily what you want. I think the real problem highlighted by patches #1 and #3 is that matplotlib (the frontend) does not tell the backends when it is drawing the plot axes and gridlines to enable the backends to switch on pixel aligned drawing. patch #4 for arcs Looks good, applied it today. Regards, Steve. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] Agg large-dataset optimization
Hi, First, I noticed a bug in the version I sent before. I've attached a new version in patch form, to be applied from the base directory of a normal 0.90.1 installation with 'patch -p1 John, > > > Have you considered Allan's version of _backend_agg.cpp (message date > was 06/27)? I just tried it, and so far, I like it. I have not found any > problems with the backend_driver.py test, and the improvement in speed > that Allan notes with the "plot(rand(10))" example is dramatic--the > difference between unusable for panning and zooming with the original > backend, and quite responsive and very usable with Allan's version. > > I have not tried to understand the algorithm or code. > > > Allan, > > > Can you suggest a simple test that graphically illustrates the "loss of > accuracy", perhaps a worst case, so we can see whether this is an actual > problem? > > I am also wondering whether your optimization technique, or some > variation of it, could and should be applied in the generation of > vector-based printer files: ps, pdf, svg. They can get excessively large > and slow with very large datasets, and the ability to trim them with > minimal loss of genuine information conveyed to the ultimate viewer of the > plot would be very nice. > > Eric patch Description: Binary data - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] new bug in backend_gtk?
You're right: my bad. Should be fixed in r3461. Cheers, Mike Eric Firing wrote: > Mike, > > When I try to save a file as postscript using the FileChooserDialog > with GtkAgg, I get: > > [EMAIL PROTECTED]:~/programs/py/mpl/matplotlib_units/examples$ python > quadmesh_demo.py > Traceback (most recent call last): > File > "/usr/local/lib/python2.5/site-packages/matplotlib/backends/backend_gtk.py", > line 696, in save_figure > fname = self.fileselect.get_filename_from_user() > File > "/usr/local/lib/python2.5/site-packages/matplotlib/backends/backend_gtk.py", > line 1095, in get_filename_from_user > menu_ext = IMAGE_FORMAT[self.cbox.get_active()] > AttributeError: 'FileChooserDialog' object has no attribute 'cbox' > > I haven't checked, but I suspect this may be a bug introduced during > your recent changes. > > Eric - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] new bug in backend_gtk?
Michael Droettboom wrote: > You're right: my bad. Should be fixed in r3461. > I meant to type r3484. > Cheers, > Mike > > Eric Firing wrote: > >> Mike, >> >> When I try to save a file as postscript using the FileChooserDialog >> with GtkAgg, I get: >> >> [EMAIL PROTECTED]:~/programs/py/mpl/matplotlib_units/examples$ python >> quadmesh_demo.py >> Traceback (most recent call last): >> File >> "/usr/local/lib/python2.5/site-packages/matplotlib/backends/backend_gtk.py", >> line 696, in save_figure >> fname = self.fileselect.get_filename_from_user() >> File >> "/usr/local/lib/python2.5/site-packages/matplotlib/backends/backend_gtk.py", >> line 1095, in get_filename_from_user >> menu_ext = IMAGE_FORMAT[self.cbox.get_active()] >> AttributeError: 'FileChooserDialog' object has no attribute 'cbox' >> >> I haven't checked, but I suspect this may be a bug introduced during >> your recent changes. >> >> Eric >> > > > - > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > ___ > Matplotlib-devel mailing list > Matplotlib-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel > > - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
