On Sun, Aug 15, 2010 at 10:49 PM, Jae-Joon Lee <lee.j.j...@gmail.com> wrote: > On Fri, Aug 13, 2010 at 3:34 AM, Jeremy Conlin <jlcon...@gmail.com> wrote: >> I have a problem with the scaling of the numbers on a colorbar. The >> problem occurs when the numbers used as colorbar labels need to be >> scaled (i.e. by 1E3). The colorbar correctly puts the scaling value >> on the top of the colorbar, but instead of of multiplying by a scale >> factor, addition is used instead. See the attached script and figure >> for example. In the example, it looks like the color scale goes from >> 0 to 2*5E3. At least, that's what I thought when I first looked at >> it. Instead it means 5000 to 5002. >> >> Is there anyway I can scale the colorbar labels by *multiplying* them >> by a scaling factor instead of *adding* a scaling factor? That seems >> more intuitive to me and those I work with. >> > > Given the value range of 5000-5002, I doubt how using the scaling > factor improve your plot. > > To disable the use of offset (+5000), > > cb = fig.colorbar(pc) > > # do not use offset > cb.formatter.set_useOffset(False) > > cb.update_ticks() > > If you do want to use scaling factor, > > # to use scaling factor > cb.formatter.set_scientific(True) > cb.formatter.set_powerlimits((0,0)) > > cb.update_ticks() > > This will only work with matplotlib v1.0. > In older versions, try to replace "update_ticks" with > "update_bruteforce" (but I'm not sure if this will work) > > IHTH, >
Thanks for your suggestions. I recognize that a range of 5000–5002 is not much; it was used simply to illustrate my point. I was able to turn the scaling off with set_useOffset(False). Is there anyway to scale by multiplying instead of adding? Thanks, Jeremy ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
