On Mon, Nov 30, 2009 at 8:26 PM, Wayne Werner <waynejwer...@gmail.com> wrote:
> A sample of the data is always helpful, but I'll take a shot in the dark.
> If you have data like this:
> 2.31 72
> 98 23
> ... ....
> 34 7.32
> And those are x y pairs you could do something like this:
> f = open('input.txt')
> #List comprehension to read all the lines as [[x1, y1], [x2, y2], ... [xn,
> yn]]
> data = [line.split() for line in f]
You have to convert the text strings to float somewhere, for example
data = [ map(float, line.split()) for line in f ]
> # Reorient values as [(x1, x2,... xn), (y1, y2, ... yn)]
> data = zip(*data)
> # plot the xy vals
> pylab.scatter(data[0], data[1])
Or, IMO a little clearer,
x, y = zip(*data)
pylab.scatter(x, y)
Kent
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