matplotlib-users

[Matplotlib-users] many plots

[Saurav P. <sa...@sa...>]

Hi All,

First, thanks for a very cool and pretty tool!

My problem is, I have a 2D numpy array, say m by n, and I would like to 
display the data in n plots (with the same abscissa).  That is, the 2D 
numpy array holds n time series data with m points each.  I could use 
pyplot.plot inside a loop to display it, but n is very large as a result 
of which it takes a long time to create the plot and display it.

Is there another way to do this more efficiently?

Thanks,
Saurav

Re: [Matplotlib-users] many plots

[Benjamin R. <ben...@ou...>]

On Fri, Feb 3, 2012 at 10:27 AM, Saurav Pathak <sa...@sa...> wrote:

> Hi All,
>
> First, thanks for a very cool and pretty tool!
>
> My problem is, I have a 2D numpy array, say m by n, and I would like to
> display the data in n plots (with the same abscissa).  That is, the 2D
> numpy array holds n time series data with m points each.  I could use
> pyplot.plot inside a loop to display it, but n is very large as a result
> of which it takes a long time to create the plot and display it.
>
> Is there another way to do this more efficiently?
>
> Thanks,
> Saurav
>
>
Just pass in the 2D array as the 'y' argument.  A line plot will be made
for each column in the 2D array and will even be automatically colored.
All lines will show up on the same axes.

Cheers!
Ben Root

Re: [Matplotlib-users] many plots

[Jae-Joon L. <lee...@gm...>]

On Sat, Feb 4, 2012 at 1:27 AM, Saurav Pathak <sa...@sa...> wrote:
> Is there another way to do this more efficiently?

I recommend you to use LineCollection, which should be much efficient.

http://matplotlib.sourceforge.net/examples/api/collections_demo.html

Regards,

-JJ