python colorbar刻度,python matplotlib colorbar设置刻度格式或定位器更改刻度标签

users,

I want to customize the ticks on a colorbar. However, I found the following strange behavior. I try to change the tick formator to the default formator (I thought this should change nothing at all) but I end up with different labels. Does anybody know what I am doing wrong? Or is this a bug?

I use matplotlib from git (v1.0.1-961-gb516ae0 , git describe).

The following code produces the two plots:

#http://matplotlib.sourceforge.net/examples/pylab_examples/griddata_demo.html

from numpy.random import uniform, seed

from matplotlib.mlab import griddata

import matplotlib.pyplot as plt

import matplotlib.ticker

import numpy as np

# make up data.

seed(0)

npts = 200

x = uniform(-2,2,npts)

y = uniform(-2,2,npts)

z = x*np.exp(-x**2-y**2)

# define grid