Re: [Matplotlib-users] applying colormap to a line
From: Nat Echols [mailto:nathaniel.ech...@gmail.com] Sent: Thursday, March 31, 2011 16:47 I'd like to divide the line segments up to get a smoother color gradient, but the values are dictated by the experiment, not a mathematical function. snip so I guess what I'm really asking for is a way to add intermediate X,Y values between every pair of values in 'points'. I can do this myself in Python, but I assume that's going to be pretty sluggish. Perhaps (for convenience if not speed) you could use a routine from scipy.interpolate [1,2], such as interp1d for piecewise linear interpolation. I imagine that, within each linear piece, you would want the density of x values to be roughly proportional to the slope. [1] http://docs.scipy.org/doc/scipy-0.8.x/reference/tutorial/interpolate.html [2] http://docs.scipy.org/doc/scipy-0.8.x/reference/interpolate.html -- Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] applying colormap to a line
I wanted to display a line plot with rainbow coloring based on the y-value, similar to what's possible for surface plots. However, the 'plot' method does not appear to accept a 'cmap' argument. The closest thing I was able to find was a recipe for different colored line segments on the SciPy examples page (http://www.scipy.org/Cookbook/Matplotlib/MulticoloredLine), but that's not really what I want - I was hoping for a continuous gradient over hundreds (possibly thousands) of points on a line. Is this possible without too much hacking? thanks, Nat -- Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] applying colormap to a line
On 03/30/2011 01:32 PM, Nat Echols wrote: I wanted to display a line plot with rainbow coloring based on the y-value, similar to what's possible for surface plots. However, the 'plot' method does not appear to accept a 'cmap' argument. The closest thing I was able to find was a recipe for different colored line segments on the SciPy examples page (http://www.scipy.org/Cookbook/Matplotlib/MulticoloredLine), but that's not really what I want - I was hoping for a continuous gradient over hundreds (possibly thousands) of points on a line. Is this possible without too much hacking? I don't think there is anything better than the second example here: http://matplotlib.sourceforge.net/examples/pylab_examples/multicolored_line.html Eric thanks, Nat -- Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
