matplotlib-users Mailing List for matplotlib

On 2012年09月22日 3:03 AM, reckoner wrote:
> Hi,
>
> I have a plot that includes arrows drawn by the quiver command. I would
> like to create animation using Func Animation, but I don't know how to
> update the quiver arrows. I can update everything else on the plot and
> animates fine.
>
> Does anybody know how to update the quiver arrows in an animation? I
> know the quiver arrows have a XY property, but changing that doesn't
> update the plot.
You cannot update the arrow positions without making a new Quiver 
instance, so to animate with varying positions, you will need to delete 
the previous Quiver instance and make a new one for each frame.
Eric
>
> Thanks!

I recommend you to use OffsetImage. Here is an example of how one can
use OffsetImage.
http://matplotlib.org/examples/pylab_examples/demo_annotation_box.html
And attached is the modified version of the original script.
Regards,
-JJ

Hi,
I have a plot that includes arrows drawn by the quiver command. I would 
like to create animation using Func Animation, but I don't know how to 
update the quiver arrows. I can update everything else on the plot and 
animates fine.
Does anybody know how to update the quiver arrows in an animation? I 
know the quiver arrows have a XY property, but changing that doesn't 
update the plot.
Thanks!

Here's the uname -a output:
Darwin Pico.local 12.0.0 Darwin Kernel Version 12.0.0: Sun Jun 24 23:00:16
PDT 2012; root:xnu-2050年7月9日~1/RELEASE_X86_64 x86_64
I just modified the script that was here:
http://matplotlib.org/faq/installing_faq.html#building-and-installing-from-source-on-osx-with-epd
I don't actually have EPD, but it didn't look like there was anything
really EPD specific in that script so I used it.
Thanks,
-Ranjit
On Fri, Sep 21, 2012 at 5:59 PM, <
mat...@li...> wrote:
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> Today's Topics:
>
> 1. Re: install problem on OSX 10.8 (Benjamin Root)
> 2. Fwd: install problem on OSX 10.8 (Benjamin Root)
> 3. Re: Image as marker and axes "equal" aspect ratio (Andrea Gavana)
> 4. Re: install problem on OSX 10.8 (Damon McDougall)
> 5. Re: netcdf4-python build (Michael Rawlins)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: 2012年9月21日 14:53:26 -0400
> From: Benjamin Root <ben...@ou...>
> Subject: Re: [Matplotlib-users] install problem on OSX 10.8
> To: Ranjit Chacko <ra...@ge...>
> Cc: mat...@li...
> Message-ID:
> <
> CAN...@ma...>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On Fri, Sep 21, 2012 at 2:19 PM, Ranjit Chacko <ra...@ge...>
> wrote:
>
> > I'm having some trouble compiling matplotlib, and I'm not sure how to fix
> > it. Does anyone have any advice on how to proceed given the following
> > traceback?
> >
> > Thanks,
> >
> > -Ranjit
> >
> >
> Which version of matplotlib? How are you building it (i.e., what set of
> directions are you following)?
>
> Ben Root
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> Message: 2
> Date: 2012年9月21日 15:01:59 -0400
> From: Benjamin Root <ben...@ou...>
> Subject: [Matplotlib-users] Fwd: install problem on OSX 10.8
> To: Matplotlib Users <mat...@li...>
> Message-ID:
> <CANNq6FkLV83c8szb-Yjh=
> 3Qy...@ma...>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Note: please use "Reply-All" to make sure the mailing list continues to get
> this thread.
>
> Could you do a "uname -a" at the command-line and give us that output? I
> was not aware that Apple shipped any 32-bit machines anymore.
>
> Ben Root
>
> ---------- Forwarded message ----------
> From: Ranjit Chacko <ra...@ge...>
> Date: Fri, Sep 21, 2012 at 2:55 PM
> Subject: Re: [Matplotlib-users] install problem on OSX 10.8
> To: Benjamin Root <ben...@ou...>
>
>
> I'm just cloned the repo from master yesterday, and I tried running the
> following script:
> NAME=matplotlib
> VERSION=v1.1.x
> PREFIX=$HOME
> cd matplotlib
> export LDFLAGS="-Os -arch i386 -L/usr/X11/lib"
> export CFLAGS="-Os -arch i386 -I/usr/X11/include
> -I/usr/X11/include/freetype2 -I/usr/X11/include/libpng12"
> export PKG_CONFIG_PATH="/usr/X11/lib/pkgconfig"
> export ARCHFLAGS="-arch i386"
> python setup.py build
> # use --prefix if you don't want it installed in the default location:
> python setup.py install #--prefix=$PREFIX
> cd ..
>
> Thanks,
>
> -Ranjit
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>________________________________
> From: Damon McDougall <dam...@gm...>
>To: Michael Rawlins <raw...@ya...> 
>Cc: "mat...@li..." <mat...@li...> 
>Sent: Friday, September 21, 2012 2:50 PM
>Subject: Re: [Matplotlib-users] netcdf4-python build
> 
>
>
>
>From what I remember dealing with the netcdf c library, you have to explicitly set a compile flag to enable hdf5 support. That was a while ago, though. I'm not sure if things have changed.
>
>
>Hope this helps.
>
>
>
>
>I did not do a source compile. 
>
>I've reinstalled libhdf5-serial-1.8.4 package and now have the right HDF5 library files. Successfully built and installed netCDF4-1.0. My script loads in module but a read/write issue is present. This is code that worked on previous system. Error:
>
> File "test.py", line 96, in <module>
>  data.missing_value=-9.99
> File "netCDF4.pyx", line 2570, in netCDF4.Variable.__setattr__ (netCDF4.c:28242)
> File "netCDF4.pyx", line 2392, in netCDF4.Variable.setncattr (netCDF4.c:26309)
> File "netCDF4.pyx", line 1013, in netCDF4._set_att (netCDF4.c:12699)
>AttributeError: NetCDF: Write to read only
>
>
>The statement in the code triggers the error.
>
>data.missing_value=-9.99 .
>
>MR
>