Problem when specifying formatter

Community matplotlib-users
1

Hi,

I'm not sure what I'm doing wrong here:

import matplotlib.pyplot as mpl
from matplotlib.ticker import NullFormatter

fig = mpl.figure()
ax = fig.add_subplot(111)
ax.xaxis.set_major_formatter(NullFormatter)

This returns the error:

Traceback (most recent call last):
   File "test.py", line 6, in <module>
     ax.xaxis.set_major_formatter(NullFormatter)
   File "/Users/tom/Library/Python/2.6/site-packages/matplotlib/axis.py", line 1091, in set_major_formatter
     formatter.set_axis(self)
TypeError: unbound method set_axis() must be called with NullFormatter instance as first argument (got XAxis instance instead)

Am I using set_major_formatter wrongly?

Thanks,

Thomas

2

http://matplotlib.sourceforge.net/api/axis_api.html?highlight=set_major_formatter#matplotlib.axis.Axis.set_major_formatter

An instance of NullFormatter is needed, instead of the class itself.

ax.xaxis.set_major_formatter(NullFormatter())

-JJ

···

On Tue, Oct 20, 2009 at 4:43 PM, Thomas Robitaille <thomas.robitaille@...287...> wrote:

ax.xaxis.set_major_formatter(NullFormatter)

3

You need to use an *instance* of NullFormatter, which is the name of a
class. Try:

ax.xaxis.set_major_formatter(NullFormatter())

Ryan

···

On Tue, Oct 20, 2009 at 3:43 PM, Thomas Robitaille <thomas.robitaille@...287...> wrote:

Hi,

I'm not sure what I'm doing wrong here:

import matplotlib.pyplot as mpl
from matplotlib.ticker import NullFormatter

fig = mpl.figure()
ax = fig.add_subplot(111)
ax.xaxis.set_major_formatter(NullFormatter)

This returns the error:

Traceback (most recent call last):
File "test.py", line 6, in <module>
ax.xaxis.set_major_formatter(NullFormatter)
File "/Users/tom/Library/Python/2.6/site-packages/matplotlib/
axis.py", line 1091, in set_major_formatter
formatter.set_axis(self)
TypeError: unbound method set_axis() must be called with NullFormatter
instance as first argument (got XAxis instance instead)

Am I using set_major_formatter wrongly?

--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma