widget updating plot; plot disappears

[Randy Heiland]

Hello,

I was testing the following on https://try.jupyter.org/  and wondering why the plot sometimes disappears:

%matplotlib notebook

import numpy as np

import matplotlib.pyplot as plt

def f(p):

    plt.figure(2)

    nx = 10

    ny = 10

    x = np.linspace(1, nx, nx)

    y = np.linspace(1, ny, ny)

    xv, yv = np.meshgrid(x, y)

    rgb = np.zeros((nx*ny,3))

    rgb[:,0] += 1

    rgb[:][p-1] = [0,1,0]

    area=200

    plt.scatter(xv, yv, marker='s', s=area, c=rgb)

    plt.xticks([])

    plt.yticks([])

#    plt.show()

from ipywidgets import interact, interactive

interactive_plot = interactive(f, p=(0, 100))

interactive_plot

[Randy Heiland]

I seem to have fixed my initial problem - rf. attached .ipynb.  

Next question - how do I avoid continuous update when a slider is moved? 

thanks, Randy

[Jason Grout]

You can use the interact_manual function. See http://ipywidgets.readthedocs.io/en/latest/examples/Using%20Interact.html#Disabling-continuous-updates

Jason

--
You received this message because you are subscribed to the Google Groups "Project Jupyter" group.
To unsubscribe from this group and stop receiving emails from it, send an email to jupyter+u...@googlegroups.com.
To post to this group, send email to jup...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/886fd352-09b5-4e50-858a-ebf7c8d3f508%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Randy Heiland]

Any idea why the "continuous_update=False" doesn't work (for me)? Does it work for others? - rf. attached .ipynb.

thanks, Randy

To unsubscribe from this group and stop receiving emails from it, send an email to jupyter+unsubscribe@googlegroups.com.

To post to this group, send email to jup...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/886fd352-09b5-4e50-858a-ebf7c8d3f508%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
You received this message because you are subscribed to a topic in the Google Groups "Project Jupyter" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/jupyter/732c6aozcIE/unsubscribe.
To unsubscribe from this group and all its topics, send an email to jupyter+unsubscribe@googlegroups.com.

To post to this group, send email to jup...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/CAPDWZHznV1xxv938KOfGnQ4xftkLMFDcrpMyQvp8Mey0BgVrDw%40mail.gmail.com.

[Jason Grout]

continuous_update is an option for a slider, not for the interactive command. Try doing:

interact_manual(f, p=(0, 100))

(and I agree that we should refactor these interact and interactive commands to be more consistent and powerful, and happy to help someone do it.)

Jason

To unsubscribe from this group and stop receiving emails from it, send an email to jupyter+u...@googlegroups.com.

To post to this group, send email to jup...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/886fd352-09b5-4e50-858a-ebf7c8d3f508%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
You received this message because you are subscribed to a topic in the Google Groups "Project Jupyter" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/jupyter/732c6aozcIE/unsubscribe.

To unsubscribe from this group and all its topics, send an email to jupyter+u...@googlegroups.com.

To post to this group, send email to jup...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/CAPDWZHznV1xxv938KOfGnQ4xftkLMFDcrpMyQvp8Mey0BgVrDw%40mail.gmail.com.

For more options, visit https://groups.google.com/d/optout.

--

You received this message because you are subscribed to the Google Groups "Project Jupyter" group.

To unsubscribe from this group and stop receiving emails from it, send an email to jupyter+u...@googlegroups.com.

To post to this group, send email to jup...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/CAO_spu4iFzDirh0AgK%3DSWe%2BmXNbZ7O0xO9TijYidqehPxOUnQg%40mail.gmail.com.