Re: [Matplotlib-users] Scattered symbols data

[João L. S. <js...@fc...>]

On 07/15/2010 02:36 PM, Clear wrote:
>
> Hello,
>
> I would like to know if it is possible to display the following feature
> using matplotlib. Say that you have a 2D plot(x,y) with a lot of data. You
> plot the data using a 2D solid line. Would be possible to add "some"
> circles/squared or whatever to the solid line? When I say "some" I mean only
> scattered values, otherwise given the quantity of data you would appreciate
> the symbols.
>
> Thanks,
>
> Clear

You can specify the parameter markevery=n to the plot to just plot every 
n-th marker. For example:

import matplotlib.pyplot as plt
import numpy as np
N = 10000
x = np.linspace(-10.0,10.0,N)
plt.plot(x,np.sin(x),"-s",markevery=N/50)
plt.show()


Regards,
João Luís