python学习笔记(2): python画图02

目录:

1 导入需要的库

from mpl_toolkits.axisartist.parasite_axes import HostAxes, ParasiteAxes import matplotlib.pyplot as plt import matplotlib import numpy as np # 设置中文显示 font = {'family':'Microsoft YaHei', 'weight':'bold', 'size':12} plt.rcParams['font.sans-serif'] = 'Microsoft YaHei' plt.rcParams['axes.unicode_minus'] = False matplotlib.rc('font', **font)

x = np.arange(1,750,20) y1 = np.sin(2*np.pi/365*x)*27 y2 = np.sin(2*np.pi/365*x)*50+100 y3 = abs(np.sin(2*np.pi/(365*2)*x)*100)

3 画图显示数据

fig = plt.figure(figsize=(10, 3)) ax = fig.add_subplot(1,3,1) ax.plot(x,y1,'r-',linewidth=2,label='y1-中文') ax.legend(loc="upper right") ax = fig.add_subplot(1,3,2) ax.plot(x,y2,'g-',linewidth=2,label='y2-中文') ax.legend(loc="upper right") ax = fig.add_subplot(1,3,3) ax.bar(x,y3,width=10,color='b',label='y3-中文') ax.legend(loc="upper right")

4 三纵坐轴显示数据

fig = plt.figure(figsize=(10, 6)) ax = HostAxes(fig, [0.1, 0.1, 0.7, 0.7]) #用[left, bottom, weight, height]的方式定义axes, 0 <= l,b,w,h <= 1 kw = dict(linewidth = 2,markerfacecolor='none',markersize = 4) #parasite addtional axes, share x ax02 = ParasiteAxes(ax, sharex=ax) ax03 = ParasiteAxes(ax, sharex=ax) #append axes ax.parasites.append(ax02) ax.parasites.append(ax03) ax03_axisline = ax02.get_grid_helper().new_fixed_axis ax03.axis['right4'] = ax03_axisline(loc='right', axes=ax03, offset=(60,0)) fig.add_axes(ax) h1, = ax.plot(x, y1, linewidth=2,color='r',label="y1-中文") h2, = ax02.plot(x, y2, linewidth=2,color='g',label="y2-中文") h3 = ax03.bar(x,y3,width=5,color='b',label='y3-中文') #invisible right axis of ax ax.axis['right'].set_visible(False) ax.axis['top'].set_visible(True) ax02.axis['right'].set_visible(True) ax02.axis['right'].major_ticklabels.set_visible(True) ax02.axis['right'].label.set_visible(True) #set label for axis ax.set_ylabel('y1-中文') ax.set_xlabel('xxx') ax02.set_ylabel('y2-中文') ax03.set_ylabel('y3-中文') #set xlim for yaxis ax.set_ylim(-150,150) ax02.set_ylim(0,150) ax03.set_ylim(0,500) ax.legend() #name axies, xticks colors ax.axis['left'].label.set_color('r') ax02.axis['right'].label.set_color('g') ax03.axis['right4'].label.set_color('b') ax.axis['left'].major_ticks.set_color('r') ax02.axis['right'].major_ticks.set_color('g') ax03.axis['right4'].major_ticks.set_color('b') ax.axis['left'].major_ticklabels.set_color('r') ax02.axis['right'].major_ticklabels.set_color('g') ax03.axis['right4'].major_ticklabels.set_color('b') ax.axis['left'].line.set_color('r') ax02.axis['right'].line.set_color('g') ax03.axis['right4'].line.set_color('b')