matplotlib改变colorbar位置和方向

#! usr/bin/python#coding=utf-8 import numpy as npimport matplotlib.pyplot as plt data=np.random.rand(10,10)fig, ax=plt.subplots()data[data==-1]=np.nan#去掉缺省值-1im =ax.imshow(data,interpolation='none',cmap='Reds_r',vmin=0.6,vmax=.9)#不插值#去掉边框ax.spines['top'].set_visible(False)ax.spines['right'].set_visible(False)ax.spines['bottom'].set_visible(False)ax.spines['left'].set_visible(False)########################################################################position=fig.add_axes([0.15, 0.05, 0.7, 0.03])#位置[左,下,右,上]cb=plt.colorbar(im,cax=position,orientation='horizontal')#方向