Re: [Matplotlib-users] Plotting from datafile

[Florian M. W. <wag...@st...>]

Hey Sayan,

for reading in simple ASCII-Files containing your two arrays you should 
have a look at the numpy.loadtxt function.

Scatter plots in matplotlib are then easily created as shown here 
http://matplotlib.org/examples/pylab_examples/scatter_demo.html

For your purpose you can do something like:

    import os
    import numpy as np
    import matplotlib.pyplot as plt

    for file in os.path.listdir():
         x, y = np.loadtxt(file, unpack=True)
         plt.scatter(x,y)
         plt.savefig(file + '.png')

Cheers,

Florian


Am 27.03.2013 09:32, schrieb Sayan Chatterjee:
> Dear All,
>
> I'm new to Matplotlib. It might be a silly question, how does one plot 
> data(not functions) in Matplotlib.
>
> How:
> 1)Two arrays (X and Y) can be plotted in a scatter diagram?
>
> 2) or a number of data files can used to produce different plots 
> having different(sequential) name?
>
> Thanks in anticipation.
> Regards,
> Sayan
>
> -- 
>
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