On 10/8/12 11:03 PM, Paul Tremblay wrote: > I often have to make graphs with time series, with each point being the > start of a week. Below is the result I wish: > > However, in order to make the secondary x axis the the month labels, I > need something like 40 lines of code. My strategy consists in first > drawing the rates in the normal way and using matplotlib's dateFormatter > to set the week numbers. That part is easy. > > In order to draw the x axis below to show when the weeks occur, I draw > two more lines, and makes these lines invisible. The first line has as > the x points the start of each month, and the y values as the > corresponding rate. The second line has as its x value the middle of > each month, with the corresponding y value. > > Below is my code. I have to use such a graph quite often--so often, in > fact, that if I don't find an easier way to make the secondary x axis, I > will store the code in my own library for re-use. Does anyone know of a > simpler, more elegant way? >
Don't have time to prove that I can reproduce what you want, but try parasite axes with axes_grid1: the example is for one on the right-hand side, but I think it'll do what you want. http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axisartist-with-parasiteaxes M ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
