Re: [Matplotlib-users] Histogram with single series - colour coding different ranges?
Ben, Awesome - thanks for the sample code. I had to make a slight change - multiplying 'y' by a float doesn't work: TypeError: can't multiply sequence by non-int of type 'float' I just did a cast to int, and it worked - not sure if this is a bad practice in Python though?: cs = (['y'] * int(round(0.25 * len(xs + (['g'] * int(round(0.5 * len(xs + (['y'] * int(round(0.25 * len(xs Anyhow, it's a pity I can't use your code with Matplotlib's hist() - as that definitely made producing histograms bins much easier. It's strange that colour-coding bars isn't a feature of hist(). I guess I'll have to look at doing all the hist setup/calculations by hand. Ah well. Thanks, Victor On Wed, Feb 23, 2011 at 03:12, Benjamin Root ben.r...@ou.edu wrote: On Tue, Feb 15, 2011 at 11:07 PM, Victor Hooi victorh...@yahoo.comwrote: heya, Is there an easy way to colour-code a Matplotlib histogram with a single set of data? So for example, you'd have a bell-shaped histogram, and the middle 50% might be green, the regions 20% to the left and right of that might be yellow, and the 5% either side beyond that could be red. I couldn't seem to find anything in the Matplotlib options for this - any suggestions? Cheers, Victor Sure, check out the following: import matplotlib.pyplot as plt import numpy as np xs = np.arange(20) ys = np.random.rand(20) cs = (['y'] * round(0.25 * len(xs))) + (['g'] * round(0.5 * len(xs))) + (['y'] * round(0.25 * len(xs))) plt.bar(xs, ys, color=cs) plt.show() Admittedly, this isn't using matplotlib's hist() function because it only allows for one color per dataset. However, you can use numpy's histogram function to get the bins and counts yourself, and then use bar() to make the bars. bar() will allow you to color the bars individually. I hope this helps! Ben Root -- EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Histogram with single series - colour coding different ranges?
2011/2/22 Benjamin Root ben.r...@ou.edu: Admittedly, this isn't using matplotlib's hist() function because it only allows for one color per dataset. However, you can use numpy's histogram function to get the bins and counts yourself, and then use bar() to make the bars. bar() will allow you to color the bars individually. Pylab hist() returns a list of patches so you can also change their properties. Goyo -- Free Software Download: Index, Search Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Histogram with single series - colour coding different ranges?
heya, Is there an easy way to colour-code a Matplotlib histogram with a single set of data? So for example, you'd have a bell-shaped histogram, and the middle 50% might be green, the regions 20% to the left and right of that might be yellow, and the 5% either side beyond that could be red. I couldn't seem to find anything in the Matplotlib options for this - any suggestions? Cheers, Victor -- Index, Search Analyze Logs and other IT data in Real-Time with Splunk Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. Free Software Download: http://p.sf.net/sfu/splunk-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Histogram with single series - colour coding different ranges?
On Tue, Feb 15, 2011 at 11:07 PM, Victor Hooi victorh...@yahoo.com wrote: heya, Is there an easy way to colour-code a Matplotlib histogram with a single set of data? So for example, you'd have a bell-shaped histogram, and the middle 50% might be green, the regions 20% to the left and right of that might be yellow, and the 5% either side beyond that could be red. I couldn't seem to find anything in the Matplotlib options for this - any suggestions? Cheers, Victor Sure, check out the following: import matplotlib.pyplot as plt import numpy as np xs = np.arange(20) ys = np.random.rand(20) cs = (['y'] * round(0.25 * len(xs))) + (['g'] * round(0.5 * len(xs))) + (['y'] * round(0.25 * len(xs))) plt.bar(xs, ys, color=cs) plt.show() Admittedly, this isn't using matplotlib's hist() function because it only allows for one color per dataset. However, you can use numpy's histogram function to get the bins and counts yourself, and then use bar() to make the bars. bar() will allow you to color the bars individually. I hope this helps! Ben Root -- Index, Search Analyze Logs and other IT data in Real-Time with Splunk Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. Free Software Download: http://p.sf.net/sfu/splunk-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
