Re: [Matplotlib-users] power law fitting of data

2007-12-28 Thread Jessica Lu
, I would expect the latter to take care of optimization thanks for the replies, Johann Jessica Lu wrote: Hi Johann, I would recommend using the python mpfit module: http://cars9.uchicago.edu/software/python/mpfit.html Cheers, Jessica On Dec 22, 2007, at 8:57 PM, Johann Cohen

Re: [Matplotlib-users] power law fitting of data

2007-12-26 Thread Jessica Lu
Hi Johann, I would recommend using the python mpfit module: http://cars9.uchicago.edu/software/python/mpfit.html Cheers, Jessica On Dec 22, 2007, at 8:57 PM, Johann Cohen-Tanugi wrote: hi jessica, This FittingData tutorial is very nice. Could you illustrate how to fix/thaw parameters? I

Re: [Matplotlib-users] power law fitting of data

2007-12-06 Thread Jessica Lu
Hi, I just happened to do the same thing two days ago. If you want uncertainties as well, here is some code that uses scipy.optimize. I just put up a preliminary example on the scipy wiki: http://www.scipy.org/Cookbook/FittingData?action=show Not the cleanest or most sophisticated code in

Re: [Matplotlib-users] How to use 'arrow'?

2007-07-20 Thread Jessica Lu
I usually use the following to make single arrows: plot([0,1], 'k.') arr1 = pylab.Arrow(0.5, 0.5, 0.1, 0.0, width=0.02) fig = pylab.gca() fig.add_patch(arr1) If in ipython -pylab you need to savefig or send another command (e.g. xlabel) or reload/refresh the plot (I can't remember the

[Matplotlib-users] legend breaks clf()

2007-06-06 Thread Jessica Lu
Hi, I just downloaded and installed the latest matplotlib (0.90.1) and the following problem occurred: plot([0,1]) scatter([0.5], [0.5]) # Should be one Line2D print gca().lines # Should be one RegularPolyCollection print gca().collections # Now load a legend: legend() # Should be one