[Matplotlib-users] linear regression with dates as x axis

[Chris W. <ch...@si...>]

Hi all,

I have some time series of disk usage that I'd like to do a linear 
regression on an plot on a nice graph with Mb used on the y-axis and 
date on the x axis.

I tried to use pylab.polyfit(dates, usage) where:

dates = [datetime(x, y, z), datetime(a, b, c), ...]
usage = [12123234, 2234235235, ...]

...but polyfit doesn't like the dates.

How should I do this?

Any example of a nice plot and linear regression using matplotlib?

cheers,

Chris

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