Hello list,
I am trying to animate a patch. The animation should show a circle orbiting
around a point. I took the code from
http://nickcharlton.net/posts/drawing-animating-shapes-matplotlib.html
Problem is that when I run the code, the animation doesn't remove the
initial position of the circle
Hi Mark,
I can't say this is the 'proper' solution or the correct interpretation,
but it should work.
I think when blitting that the init function serves as a something of a
background for the rest of the animation. So try changing
def init():
*patch.center = (5, 5)*
ax.add_patch(patch)
I thought about that. I even thought about changing the initial color to
white or radius to zero.
But I am thinking this is a bug. When blitting, whatever is created with
the init function is not removed. That is why lines that are animated
initially have no data. For a Patch object this is a bit
Well, the intended behavior of init() isn't completely clear to me after
reading over some of the docs http://matplotlib.org/contents.html and
examples http://matplotlib.org/examples/animation/index.html, so I'm not
sure if it's a bug or not. Either way, it could be a request for
documentation,
Working off of very faded memory, try not to return any objects in your
init function that you intend to be animated. If I remember correctly, when
blitting is True, the animator treats any object returned by the init()
function as background objects, and any objects returned by the animation
This is pretty weird. If instead of Mark's original script, if I move the
add_patch out of init and have the init simply return an empty tuple, it
_mostly_ works as expected. But -- at least on my computer -- on some runs,
it has the moving circle, but also leaves a circle at the top, starting
I think it is because the figure may or may not have some things drawn by
the time the blitting starts. This is due to draw_idle(). So, it is trying
to capture whatever is in the figure's canvas, but drawing may or may not
have happened yet.
Try this:
def animate(i):
if not animate.patch:
yes, Ben, I understand the difference now.
To Mike: I have to select the region of the figure I need in the pdf file
and paste it in the powerpoint ... Isn't this you're doing as well?
But fine, I can go with the current quality. Thanks to you all for this
discussion.
Cheers,
Chao
On Tue,
On Apr 23, 2014, at 8:35 AM, Chao YUE chaoyue...@gmail.com wrote:
yes, Ben, I understand the difference now.
To Mike: I have to select the region of the figure I need in the pdf file and
paste it in the powerpoint ... Isn't this you're doing as well?
Why do you need to select a region?
On Apr 23, 2014, at 11:41AM, Jody Klymak wrote:
On Apr 23, 2014, at 8:35 AM, Chao YUE chaoyue...@gmail.com wrote:
yes, Ben, I understand the difference now.
To Mike: I have to select the region of the figure I need in the pdf file
and paste it in the powerpoint ... Isn't this you're
Benjamin,
I don't mind doing classes to store the state, but isn't a Patch already a
class?
Do you know of an example online that I can work off?
Thanks for your suggestions,
Mark
On Wed, Apr 23, 2014 at 5:12 PM, Benjamin Root ben.r...@ou.edu wrote:
I think it is because the figure may or
Raymond,
The documentation says:
If blit=True, *func* and *init_func* should return an iterable of drawables
to clear.
But clearly, whatever is set by init_func is not cleared during animation
when blit=True, while it is cleared when blit=False.
Unless anybody knows what I am doing wrong I
https://github.com/WeatherGod/BRadar
in scripts/, there is radarmovie.py which I create a few subclasses of
FuncAnimation, which was to solve a modularity issue I was having (I needed
self-contained animation classes that I could use pieces of elsewhere, but
still be able to join them all
I'm sorry, these are questions that could be found in the Axes
documentation, but I really don't feel like scrolling through 100 pages
that are irrelevant hoping I can find the relevant functions, which I
don't even know what they are called. Is there ever going to be a
concise listing of
On 2014/04/23 11:19 AM, Michael Mossey wrote:
I'm sorry, these are questions that could be found in the Axes
documentation, but I really don't feel like scrolling through 100 pages
that are irrelevant hoping I can find the relevant functions, which I
don't even know what they are called. Is
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