正弦图像: #coding:utf-8import numpy as npimport matplotlib.pyplot as pltx=np.linspace(0,10,1000)y=np.sin(x)z=np.cos(x**2)#控制图形的长和宽单位为英寸,# 调用figure创建一个绘图对象,并且使它成为当前的绘图对象.plt.figure(figsize=(8,4))#$可以让字体变得跟好看#给所绘制的曲线一个名字,此名字在图示(legend)中显示.# 只要在字符串前后添加"$&qu
sigmoid函数图像 x=-10:0.1:10; y=sigmf(x,[1 0]); plot(x,y) 画出的图像如下所示: 怎么将Y轴放在中间呢,而不是在左边? 即如何得到这种效果呢? 方法:新建一个函数:xyplot.m %作用:将Y坐标轴放在中间 function xyplot(x,y) % PLOT plot(x,y); else display(' Not 2D Data set !') end end hold on; % GET TICKS X=get(gca,'Xtick
import matplotlib.pyplot as plt Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 97, in <module> _backend_mod, new_figure_mana
1.热力图 import numpy as np import numpy.random import matplotlib.pyplot as plt # Generate some test data x = np.random.randn(8873) y = np.random.randn(8873) heatmap, xedges, yedges = np.histogram2d(x, y, bins=50) extent = [xedges[0], xedges[-1], yedges