Re: [Matplotlib-users] Using colourmap from matplotlib

2010-03-20 Thread Ciarán Mooney
Hi, I haven't tried it, but maybe it's to do with the fact that you're quantising the colourmap to 256 values; I think matplotlib computes the exact rgb values using interpolation. If the only reason you're using PIL is to get a .bmp file, maybe you could save the file straight from

[Matplotlib-users] Using colourmap from matplotlib

2010-03-18 Thread Ciarán Mooney
Hi, I am trying to create an image from an array using PIL, numpy and a colourmap from matplotlib. I got the colourmap by using ipython and the following code colourmap = [] for i in xrange(256): r,g,b,a = cm.jet(i) r = int(round((r * 255),0)) g = int(round((g * 255),0)) b =

[Matplotlib-users] [ANN] EuroPython 2010 registration and talk submissions now open!

2010-03-16 Thread Ciarán Mooney
EuroPython 2010 - 17th to 24th July 2010 EuroPython is a conference for the Python programming language community, including the Django, Zope and Plone communities. It is aimed at everyone in the Python community, of all skill levels, both users and

[Matplotlib-users] Changing axis units, with imshow()

2009-04-09 Thread Ciarán Mooney
Hi, I am trying to plot an image with matplotlib and change the default axis units. Using the cookbook recipe (import image with PIL, and use imshow() ). I am able to get matplotlib to display the image, but the axis are just the x and y pixel numbers. I'd like to convert them to something

[Matplotlib-users] Importing Null data points

2009-04-07 Thread Ciarán Mooney
Hi, I have an ASCII data set, which includes null data points. eg 1 x1 y1 z1 2 x2 y2 z2 3 x3 y3 z3 4 y3 z3 5 y4 z4 6 y5 I am using ipython with pylab enabled, and the load(/xxx/xxx) function. However it chokes on the blank, null, values. How can I get this data set into