Yannick Copin wrote: > Hi, > > I take the opportunity of a recent thread about axes label to reiterate > a question I posted some time ago: > > Is there a way (best would be a default parameters in matplotlibrc) to > automagically plot minor ticks?
I think that what you need to do is to explicitly set both the major and the minor locator to a MultipleLocator, but with different bases: ax.xaxis.set_major_locator(MultipleLocator(base=1)) ax.xaxis.set_minor_locator(MultipleLocator(base=0.5)) This assumes you know enough about the range to know what suitable bases are. If this is not the case, then you could use an explicit call to MaxNLocator(nminor).bin_boundaries(xmin, xmax) to help you select the minor base, and multiply it by 2, or 4, or 5, or whatever you like to get the major base. This will work if xmax-xmin is not too far removed from xmax and xmin. Eric > > I *thought* I knew how to add them manually using e.g. > ax.xaxis.set_minor_locator, but I dont know how to handle them > automatically. E.g. my simplest guest was to use LinearLocator: > > x = randn(100) > y = randn(100) > plot(x,y,'bo') > ax = gca() > ax.xaxis.set_minor_locator(LinearLocator()) > > But these minor ticks wont (necessarily) be coherent with the automatic > major ticks: > > L = ax.xaxis.get_major_locator() > l = ax.xaxis.get_minor_locator() > > print L() > [-4. -3. -2. -1. 0. 1. 2. 3. 4.] > > print l() > [-4. -3.2 -2.4 -1.6 -0.8 0. 0.8 1.6 2.4 3.2 4. ] > > (see, it will look like |.......:.|.....:...|...:.....|.:...) > > How could I do to have some minor ticks automagically coherent with the > automated major ticks? > > Cheers. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
