loglog

一、直角坐标系中的连续函数 1.简单绘图 >>x=[0:0.1:5]; >>y=sin(x); >>plot(x,y),xlabel('x')/*横坐标*/，ylabel('y')/**纵坐标/； 2.更精确的图 fplot('exp(-1.2*x).*sin(x)',[0,4])/*在（0,4）上绘制图像*//*这里必须是点乘（矩阵相乘），直接*会报错*/，title（'y=exp(-1.2x)*sin(x)的图像'） 3.更多绘图选项 plot（x,y）,grid on/*绘制网格*/，axis equal/*间距相同*/ /*axis auto是让MATLAB自动选择*/ 4.同时绘制多个函数 plot（x,y,t,f,'--'）/*用默认实线绘制y=f(x),用'--'绘制f=f(t)*/ /*还有实线‘-’，虚线‘--’，虚点线‘-.’,点线‘：’*/ 还可以在图像旁添加图例用‘legend‘，即plot(x,yt,f,'--'),legend('sinh(x)','cosh(x)'),如下图： 5.个性化设置 （1）颜色 plot(x,y,'r--') /*用红色虚线绘制图像*/ （2）坐标比例 plot（x,y）,axis([xmin xmax ymin ymax]) （3）一次显示两个坐标系 subplot(1,2,1) /*一行两列，当前函数在这行第一个*/ /

I have a plot with me which is logarithmic on both the axes. I have pyplot's loglog function to do this. It also gives me the logarithmic scale on both the axes. Now, using numpy I fit a straight line to the set of points that I have. However, when I plot this line on the plot, I cannot get a straight line. I get a curved line. The blue line is the supposedly "straight line". It is not getting plotted straight. I want to fit this straight line to the curve plotted by red dots Here is the code I am using to plot the points: import numpy from matplotlib import pyplot as plt import math fp=open(