matplotlib-devel Mailing List for matplotlib

>>>>> "Charlie" == Charlie Moad <cw...@gm...> writes:

    Charlie> A challenge to the community! ;) Run the current
    Charlie> cursor.py example with the TkAgg backend. (blitting
    Charlie> should be on) i.e.  python cursor.py -dTkAgg

    Charlie> Why does the blitting not update the entire axis?  Any
    Charlie> help on this is greatly appreciated.

THere was a flipy offset needed in _tkagg.cpp

      int srcheight = (int)aggRenderer->get_height();
      //...
      desty = srcheight-(int)t; 

I just commited this to CVS -- take it for a test drive.

Checking in src/_tkagg.cpp;
/cvsroot/matplotlib/matplotlib/src/_tkagg.cpp,v  <--  _tkagg.cpp
new revision: 1.10; previous revision: 1.9

JDH

A challenge to the community! ;)

Run the current cursor.py example with the TkAgg backend. (blitting
should be on)
i.e.  python cursor.py -dTkAgg

Why does the blitting not update the entire axis?  Any help on this is
greatly appreciated.

Thanks,
     Charlie

On 11/10/05, Charlie Moad <cw...@gm...> wrote:
> So this happens with TkAgg and blitting.  Here is the sample script:
>
> #!/usr/bin/env python
> import matplotlib; matplotlib.use('TkAgg')
> import pylab
> from matplotlib.widgets import SpanSelector
>
> fig =3D pylab.figure()
> ax =3D fig.add_subplot(111)
>
> ax.plot(pylab.rand(100))
> def onselect(vmin, vmax):
>     print vmin, vmax
>
> span =3D SpanSelector(ax, onselect, 'horizontal', useblit=3DTrue,
>                     rectprops=3Ddict(alpha=3D0.5, facecolor=3D'red') )
>
> pylab.show()
>
> Adjust the subplot params then you will see the distortion.  With 2
> subplots the spanselector never visually appears, but the callback is
> called.
>
> Thanks,
>      Charlie
>
> On 11/9/05, Charlie Moad <cw...@gm...> wrote:
> >      I will have to do more testing, but I am calling
> > figure.subplots_adjust, not adjusting with the widget.  This is also
> > through the oo interface.  I will try to write a sample script and get
> > back to the list.
> >
> > Thanks,
> >
> > On 11/9/05, John Hunter <jdh...@ac...> wrote:
> > > >>>>> "Charlie" =3D=3D Charlie Moad <cw...@gm...> writes:
> > >
> > >     Charlie> I guess I should have mentioned TkAgg CVS.  I didn't
> > >     Charlie> think the problem would be specific to a backend, so I
> > >     Charlie> didn't try any others.  Also, when I have more than one
> > >     Charlie> subplot, nothing is drawn period.
> > >
> > > tkagg works for me, as do multiple subplots.  Weird.  I'm using
> > > examples/span_selector.py.  You too?
> > >
> > > JDH
> > >
> >
>

On Thursday 17 November 2005 10:24 pm, John Hunter wrote:
> Darren found this problem with creating a temporary dir with
> python2.2.  I don't have a 2.2 install laying around.  If someone
> does, could you take a minute and find what the proper way is to avoid
> this err:
>
>     t = tempfile.TemporaryFile(dir=p)
> TypeError: TemporaryFile() got an unexpected keyword argument 'dir'

Here is the docstring for tempfile.TemporaryFile in python-2.2:

TemporaryFile(mode='w+b', bufsize=-1, suffix='')
    Create and return a temporary file (opened read-write by default).

Darren