Greetings,
I'm needing to create two plots, one is to serve as an overlay on the
other. The overlay contains a set of markers to identify points in
the underlaid probability field. I'm doing this in a loop with a map
background, so to prevent redrawing the map every time, I want to
remove the markers after saving the plot (so I can then reuse the
background again). I know how to remove contours, but cannot figure
out how to remove points. Here is a link to a sample script that
illustrates the problem.
https://gist.github.com/072c8612f313e8ea2355
Ideally, I would expect each plot to have only a single point, but the
old points aren't being removed and are displayed on subsequent
images. What am I doing wrong?
Patrick
···
---
Patrick Marsh
Ph.D. Student / Liaison to the HWT
School of Meteorology / University of Oklahoma
Cooperative Institute for Mesoscale Meteorological Studies
National Severe Storms Laboratory
http://www.patricktmarsh.com
Illustration with ipython -pylab:
In [1]: xx = plot(1.3, 2.4, 'ro')
In [2]: xx[0].remove()
In [3]: draw()
Note that plot() returns a list of Line2D objects, each of which has a remove() method.
Eric
···
On 05/27/2011 07:53 AM, Patrick Marsh wrote:
Greetings,
I'm needing to create two plots, one is to serve as an overlay on the
other. The overlay contains a set of markers to identify points in
the underlaid probability field. I'm doing this in a loop with a map
background, so to prevent redrawing the map every time, I want to
remove the markers after saving the plot (so I can then reuse the
background again). I know how to remove contours, but cannot figure
out how to remove points. Here is a link to a sample script that
illustrates the problem.
Marker Update Example · GitHub
Ideally, I would expect each plot to have only a single point, but the
old points aren't being removed and are displayed on subsequent
images. What am I doing wrong?
Thanks, Eric!
I had tried
pt = plot(...)
for p in pt:
p.remove()
and that did not do the trick. However, doing it the way you
suggested worked like a charm. Thanks!
Patrick
···
---
Patrick Marsh
Ph.D. Student / Liaison to the HWT
School of Meteorology / University of Oklahoma
Cooperative Institute for Mesoscale Meteorological Studies
National Severe Storms Laboratory
http://www.patricktmarsh.com
On Fri, May 27, 2011 at 2:57 PM, Eric Firing <efiring@...202...> wrote:
On 05/27/2011 07:53 AM, Patrick Marsh wrote:
Greetings,
I'm needing to create two plots, one is to serve as an overlay on the
other. The overlay contains a set of markers to identify points in
the underlaid probability field. I'm doing this in a loop with a map
background, so to prevent redrawing the map every time, I want to
remove the markers after saving the plot (so I can then reuse the
background again). I know how to remove contours, but cannot figure
out how to remove points. Here is a link to a sample script that
illustrates the problem.
Marker Update Example · GitHub
Ideally, I would expect each plot to have only a single point, but the
old points aren't being removed and are displayed on subsequent
images. What am I doing wrong?
Illustration with ipython -pylab:
In [1]: xx = plot(1.3, 2.4, 'ro')
In [2]: xx[0].remove()
In [3]: draw()
Note that plot() returns a list of Line2D objects, each of which has a
remove() method.
Eric
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