Re: [Matplotlib-users] plotting numbers on axes in scientific notation
Eric Firing wrote: > Fabrice Silva wrote: >> Le mardi 09 septembre 2008 à 08:26 -0400, Michael Droettboom a écrit : >>> You can use >>> >>> def ticklabel_format(self, **kwargs): >> It did not figure how to use that! >> I've tried in ipython : >> import numpy as np >> t = np.linspace(0,1,1024) >> f = np.sin(10*t)/1e5 >> plot(t,f) >> ax = gca() >> ax.ticklabel_format(style='sci', axis='y') > >ax.yaxis.major.formatter.set_powerlimits((0,0)) > >> show() >> >> but the yticklabels are still in plain notation... >> I've googled, but I still can not find where I am wrong! > > Yes, this is confusing. The problem is that the "scientific" style uses > scientific notation only for sufficiently large or small numbers, with > thresholds determined by the powerlimits parameter. The line I added > above will force scientific notation. > > The ticklabel_format method needs another kwarg to enable setting the > powerlimits. Done in svn 6148. I called the kwarg 'scilimits' to emphasize that it works with the 'sci' style; if there are comments to the effect that I should have called it 'powerlimits' for consistency with the corresponding ScalarFormatter method, I can change it. With the change in svn, instead of the line I added above, your call to ticklabel_format would be: ax.ticklabel_format(style='sci', scilimits=(0,0), axis='y') Eric - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plotting numbers on axes in scientific notation
Fabrice Silva wrote: > Le mardi 09 septembre 2008 à 08:26 -0400, Michael Droettboom a écrit : >> You can use >> >> def ticklabel_format(self, **kwargs): > It did not figure how to use that! > I've tried in ipython : > import numpy as np > t = np.linspace(0,1,1024) > f = np.sin(10*t)/1e5 > plot(t,f) > ax = gca() > ax.ticklabel_format(style='sci', axis='y') ax.yaxis.major.formatter.set_powerlimits((0,0)) > show() > > but the yticklabels are still in plain notation... > I've googled, but I still can not find where I am wrong! Yes, this is confusing. The problem is that the "scientific" style uses scientific notation only for sufficiently large or small numbers, with thresholds determined by the powerlimits parameter. The line I added above will force scientific notation. The ticklabel_format method needs another kwarg to enable setting the powerlimits. Eric - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plotting numbers on axes in scientific notation
Le mardi 09 septembre 2008 à 08:26 -0400, Michael Droettboom a écrit : > You can use > > def ticklabel_format(self, **kwargs): It did not figure how to use that! I've tried in ipython : import numpy as np t = np.linspace(0,1,1024) f = np.sin(10*t)/1e5 plot(t,f) ax = gca() ax.ticklabel_format(style='sci', axis='y') show() but the yticklabels are still in plain notation... I've googled, but I still can not find where I am wrong! -- Fabrice Silva <[EMAIL PROTECTED]> LMA UPR CNRS 7051 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plotting numbers on axes in scientific notation
You can use def ticklabel_format(self, **kwargs): """ Convenience method for manipulating the ScalarFormatter used by default for linear axes. Optional keyword arguments: === = Keyword Description === = *style* [ 'sci' (or 'scientific') | 'plain' ] plain turns off scientific notation *axis*[ 'x' | 'y' | 'both' ] === = Only the major ticks are affected. If the method is called when the :class:`~matplotlib.ticker.ScalarFormatter` is not the :class:`~matplotlib.ticker.Formatter` being used, an :exc:`AttributeError` will be raised with no additional error message. Additional capabilities and/or friendlier error checking may be added. """ anirudh vij wrote: > Hi, > > How can I plot numbers on the x and y axes in scientific notation? > I have very large values on the y axis which I'd like to show as 1e9 > and not 1 followed by 9 zeros. > > > > > - > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] plotting numbers on axes in scientific notation
Hi, How can I plot numbers on the x and y axes in scientific notation? I have very large values on the y axis which I'd like to show as 1e9 and not 1 followed by 9 zeros. - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
