Python- 1 second plots continous presentation

Question

I have a dictionary with data. For every entry I would like to display plots for 1 second and move to the next one. The plots to display are already coded in external scripts. I would like to do this automatically. So I loop through the dict, display first set of plots[0], close the plots[0], display plots[1] close plots[1] ... I would like to set up display time for let say 1 second and have the plot as full screen. The problem that during the presentation I don't want to touch the computer.

import pylab as pl
import numpy as np

x = np.arange(-np.pi, np.pi, 0.1)         # only for the example purpose
myDict = {"sin":np.sin(x), "cos":np.cos(x), "exp":np.exp(x)}
for key in myDict:
    print myDict[key]
    pl.plt.plot(myDict[key])              # in origin coming from external function
    pl.plt.plot(x)                        # in origin coming from external function
    pl.plt.show()

Does anyone know what function should be used and how to modify above?

http://stackoverflow.com/questions/5179589/how-to-achieve-continuous-3d-plotting-i-e-update-a-figure-using-python-and-ma — Joran Beasley, Oct 01 '12 at 18:47
possible duplicate of [pylab.ion() in python 2, matplotlib 1.1.1 and updating of the plot while the program runs](http://stackoverflow.com/questions/12822762/pylab-ion-in-python-2-matplotlib-1-1-1-and-updating-of-the-plot-while-the-pro) — Mechanical snail, Jun 05 '13 at 23:34

score 3 · Accepted Answer · edited May 23 '17 at 10:28

3

A simple method is to use plt.pause(1). A more sophisticated method is to usethe matplotlib.animate module. See pylab.ion() in python 2, matplotlib 1.1.1 and updating of the plot while the program runs

example, api, tutorial

edited May 23 '17 at 10:28

Community

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1

answered Oct 02 '12 at 00:28

tacaswell

84,579
22
210
199

score 0 · Answer 2 · answered Oct 01 '12 at 19:05

0

import time
import pylab as pl
import numpy as np

pl.ion()
x = np.arange(-np.pi, np.pi, 0.1)         # only for the example purpose
myDict = {"sin":np.sin, "cos":np.cos, "exp":np.exp}
for key in myDict:
    print myDict[key]
    pl.clf()
    y = myDict[key](x)
    pl.plt.plot(x, y, label=key)
    pl.plt.draw()
    time.sleep(1)

answered Oct 01 '12 at 19:05

Lepy

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@Lepy I try to implement your solution but it doesn't want to work. I cannot change lines `pl.plt.plot(myDict[key])` and `pl.plt.plot(x)` as in the original problem they are implemented in different script. When I try as it stands, the figure does not show I try different things but now lack. How would you write with multpiple `plot()` functions to display on one figure? And also do you know how to have the figure in the whole screen? – tomasz74 Oct 01 '12 at 19:53

Python- 1 second plots continous presentation

2 Answers2

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