matplotlib-users

[Matplotlib-users] tickmark font and placement question

[Ryan K. <rya...@gm...>]

My love of large fonts is causing a problem.  If you look at the
attached figure, I typically have x and y tick marks that nearly
collide in the lower left hand corner of each subplot.  I typically
end up setting the yticks by hand, but this isn't super convienent for
each plot.  I am about to right a function to drop the lowest ytick
label, but is there a better approach?

Thanks,

Ryan

Re: [Matplotlib-users] tickmark font and placement question

[John H. <jdh...@ac...>]

>>>>> "Ryan" == Ryan Krauss <rya...@gm...> writes:

    Ryan> My love of large fonts is causing a problem.  If you look at
    Ryan> the attached figure, I typically have x and y tick marks
    Ryan> that nearly collide in the lower left hand corner of each
    Ryan> subplot.  I typically end up setting the yticks by hand, but
    Ryan> this isn't super convienent for each plot.  I am about to
    Ryan> right a function to drop the lowest ytick label, but is
    Ryan> there a better approach?

Increase the xtick.major.pad and/or ytick.major.pad rc settings by a
couple of points.

Alternatively, if you do want to drop the leftmost xtick label, for
instance, you can easily derive a custom formatter.  Here you are using
the LogFormatterMathtext

from matplotlib.ticker import LogFormatterMathtext

class MyFormatter(LogFormatterMathtext):
    def __call__(self, x, pos=None):
        if pos==0: return ''  # pos=0 is the first tick
        else: return LogFormatterMathtext(self, x, pos)

ax.xaxis.set_major_formatter(MyFormatter())

Nice looking figure!
JDH

Re: [Matplotlib-users] tickmark font and placement question

[Ryan K. <rya...@gm...>]

The new formatter works pretty well.  One change though, the last line
should be:

else: return LogFormatterMathtext.__call__(self, x, pos)

Thanks,

John


On 4/13/06, John Hunter <jdh...@ac...> wrote:
> >>>>> "Ryan" =3D=3D Ryan Krauss <rya...@gm...> writes:
>
>     Ryan> My love of large fonts is causing a problem.  If you look at
>     Ryan> the attached figure, I typically have x and y tick marks
>     Ryan> that nearly collide in the lower left hand corner of each
>     Ryan> subplot.  I typically end up setting the yticks by hand, but
>     Ryan> this isn't super convienent for each plot.  I am about to
>     Ryan> right a function to drop the lowest ytick label, but is
>     Ryan> there a better approach?
>
> Increase the xtick.major.pad and/or ytick.major.pad rc settings by a
> couple of points.
>
> Alternatively, if you do want to drop the leftmost xtick label, for
> instance, you can easily derive a custom formatter.  Here you are using
> the LogFormatterMathtext
>
> from matplotlib.ticker import LogFormatterMathtext
>
> class MyFormatter(LogFormatterMathtext):
>     def __call__(self, x, pos=3DNone):
>         if pos=3D=3D0: return ''  # pos=3D0 is the first tick
>         else: return LogFormatterMathtext(self, x, pos)
>
> ax.xaxis.set_major_formatter(MyFormatter())
>
> Nice looking figure!
> JDH
>

Re: [Matplotlib-users] tickmark font and placement question

[Malte M. <Mal...@cs...>]

Hi,

I have a related question.  How do I change the (font)size of the ticklabels, 
without having to step through them?
I have "ganged" plots and am scaling fonts by a factor depending on nrows and 
ncolumns. 
I also need this for the size of the legend "labels"

Cheers,
Malte

On Friday 14 April 2006 04:25, Ryan Krauss wrote:
> The new formatter works pretty well.  One change though, the last line
> should be:
>
> else: return LogFormatterMathtext.__call__(self, x, pos)
>
> Thanks,
>
> John
>
> On 4/13/06, John Hunter <jdh...@ac...> wrote:
> > >>>>> "Ryan" == Ryan Krauss <rya...@gm...> writes:
> >
> >     Ryan> My love of large fonts is causing a problem.  If you look at
> >     Ryan> the attached figure, I typically have x and y tick marks
> >     Ryan> that nearly collide in the lower left hand corner of each
> >     Ryan> subplot.  I typically end up setting the yticks by hand, but
> >     Ryan> this isn't super convienent for each plot.  I am about to
> >     Ryan> right a function to drop the lowest ytick label, but is
> >     Ryan> there a better approach?
> >
> > Increase the xtick.major.pad and/or ytick.major.pad rc settings by a
> > couple of points.
> >
> > Alternatively, if you do want to drop the leftmost xtick label, for
> > instance, you can easily derive a custom formatter.  Here you are using
> > the LogFormatterMathtext
> >
> > from matplotlib.ticker import LogFormatterMathtext
> >
> > class MyFormatter(LogFormatterMathtext):
> >     def __call__(self, x, pos=None):
> >         if pos==0: return ''  # pos=0 is the first tick
> >         else: return LogFormatterMathtext(self, x, pos)
> >
> > ax.xaxis.set_major_formatter(MyFormatter())
> >
> > Nice looking figure!
> > JDH
>

Re: [Matplotlib-users] tickmark font and placement question

[John H. <jdh...@ac...>]

>>>>> "Malte" == Malte Marquarding <Mal...@cs...> writes:

    Malte> Hi, I have a related question.  How do I change the
    Malte> (font)size of the ticklabels, without having to step
    Malte> through them?  

What is wrong with stepping through them?

JDH

Re: [Matplotlib-users] tickmark font and placement question

[Malte M. <Mal...@cs...>]

Laziness ;-)

Thanks, I just needed to know if there is something I might have overlooked.
I just couldn't think of a case where you would want to change the tick label 
size on an individual basis, so I thought there would be a method in 
"axes.xaxis/axes.yaxis"  to do this to the whole list.

Is this something which could be added to the Formatter classes, or maybe a 
Styler Class to change Font properties and colors.

Cheers,
Malte.

On Tuesday 18 April 2006 13:48, you wrote:
> >>>>> "Malte" == Malte Marquarding <Mal...@cs...> writes:
>
>     Malte> Hi, I have a related question.  How do I change the
>     Malte> (font)size of the ticklabels, without having to step
>     Malte> through them?
>
> What is wrong with stepping through them?
>
> JDH

Re: [Matplotlib-users] tickmark font and placement question

[John H. <jdh...@ac...>]

>>>>> "Malte" == Malte Marquarding <Mal...@cs...> writes:


    Malte> Laziness ;-) Thanks, I just needed to know if there is
    Malte> something I might have overlooked.  I just couldn't think
    Malte> of a case where you would want to change the tick label
    Malte> size on an individual basis, so I thought there would be a
    Malte> method in "axes.xaxis/axes.yaxis" to do this to the whole
    Malte> list.

    Malte> Is this something which could be added to the Formatter
    Malte> classes, or maybe a Styler Class to change Font properties
    Malte> and colors.

You can change the default tick label size by setting an rc
configuration parameter -- http://matplotlib.sf.net/matplotlibrc.  See
the properties

  xtick.major.size     : 4      # major tick size in points
  xtick.minor.size     : 2      # minor tick size in points
  xtick.major.pad      : 4      # distance to major tick label in points
  xtick.minor.pad      : 4      # distance to the minor tick label in points
  xtick.color          : k      # color of the tick labels
  xtick.labelsize      : 12     # fontsize of the tick labels
  xtick.direction      : in     # direction: in or out

and ditto for yaxis.  Also, if you like to save typing, you can use
the setp functionality to set multiple properties for multiple objects
w/o changing the defaults

  setp(ax.get_xticklabels(), fontsize=12, color='red')


JDH