matlab绘制双纵坐标图.doc

MATLAB画双纵坐标具有两个纵坐标标度的图形在MATLAB中，如果需要绘制出具有不同纵坐标标度的两个图形，可以使用plotyy绘图函数。调用格式为：plotyy(x1,y1,x2,y2)其中x1,y1对应一条曲线，x2,y2对应另一条曲线。横坐标的标度相同，纵坐标有两个，左纵坐标用于x1,y1数据对，右纵坐标用于x2,y2数据对。双y轴坐标可以用plotyy(x,y1,x,y2)来实现双x坐标可以用set(gca,xaxislocation,bottom,xticklabel,0,1,2,3,4) （假设x轴的标注为1，2，3，4）set(gca,xaxislocation,top,xticklabel,0,1,2,3,4)进行相应的设置实现双纵坐标画图，其中一个为对数坐标，另一个为正常坐标。而且两个坐标的范围差别很大举例如下：t = 0:900; A = 1000; a = 0.005; b = 0.005;z1 = A*exp(-a*t);z2 = sin(b*t);haxes,hline1,hline2 = plotyy(t,z1,t,z2,semilogy,plot);/archiver/tid-738830.htmlmatlab作图里面如何分别设置双纵坐标的刻度？工作遇到如下问题：需要设置双y轴的刻度，用到以下函数，set(gca,XTick,0:5:100) set(gca,yTick,0:10:350) 只是设置左边的y轴刻度，请问各位高手，右边y轴怎么设置刻度标注？双纵坐标的标注已实现AX=plotyy(x1,y1,x1,y2);set(get(AX(1),Ylabel),string,left Y-axis);set(get(AX(2),Ylabel),string,right y-axis);了解plotyy的返回值AX=plotyy(x1,y1,x1,y2);得到两个axes句柄，AX(1)和AX(2)set(AX(1),yTick,0:10:350) 设置左边Y轴的刻度 set(AX(2),yTick,0:10:350) 设置右边Y轴的刻度/thread-42331-1-1.html双y坐标实例close all hiddenclear all clc% w=boxcar(nfft);fni1=input(请输入时间序列文件: ,s);fid1=fopen(fni1,r);s=fscanf(fid1,%s,1);if same(s,Curve)for i=1:61tline=fgetl(fid1);endelsefid1=fopen(fni1,r);enda1=fscanf(fid1,%f);status=fclose(fid1);n=length(a1);n2=n/2;a2=reshape(a1,2,n2);x1=a2(1,:);y1=a2(2,:);fni2=input(输入速度曲线文件,s);fid2=fopen(fni2,r);b=fscanf(fid2,%f);n3=length(b);n4=n3/2;b2=reshape(b,2,n4);x2=b2(1,:);y2=b2(2,:);p=polyfit(x2,y2,3); y3=polyval(p,x2);% plot(x2,y2)AX,H1,H2=plotyy(x1,y1,x2,y3);grid on;xlabel(时间/s);set(get(AX(1),Ylabel),string,加速度/g);set(get(AX(2),Ylabel),string,速度km/h);set(AX(1),yTick,-2:0.5:2);% % axes1 = axes(Position,0.08 0.73 0.38 0.25,Parent,figure1);% axis(axes1,0 xtime(end) -0.5 0.5);% set(AX(2),YTick,300:5:350);yticks2 = linspace(300,360,9);set(AX(2),YLim,300 360,YTick,yticks2);set(H2,linewidth,3);x = 0:0.01:20;y1 = 200*exp(-0.05*x).*sin(x);y2 = 0.8*exp(-0.5*x).*sin(10*x);AX,H1,H2 = plotyy(x,y1,x,y2,plot);set(AX(1),XColor,k,YColor,b);set(AX(2),XColor,k,YColor,r);HH1=get(AX(1),Ylabel);set(HH1,String,Left Y-axis);set(HH1,color,b);HH2=get(AX(2),Ylabel);set(HH2,String,Right Y-axis);set(HH2,color,r);set(H1,LineStyle,-);set(H1,color,b);set(H2,LineStyle,:);set(H2,color,r);legend(H1,H2,y1 = 200*exp(-0.05*x).*sin(x);y2 = 0.8*exp(-0.5*x).*sin(10*x);xlabel(Zero to 20 musec.);title(Labeling plotyy);MATLAB作图：plotyy使用方法。即：横坐标相同，纵坐标不同的两条曲线画在同一图上进行比对。例1. 需要采用图形句柄,详细内容参考MATLAB帮助文件有关plotyy的例程%This example graphs two mathematical functions using plot as the plotting function. The two y-axes%enable you to display both sets of data on one graph even though relative values of the data are quite%different.x = 0:0.01:20;y1 = 200*exp(-0.05*x).*sin(x);y2 = 0.8*exp(-0.5*x).*sin(10*x);AX,H1,H2 = plotyy(x,y1,x,y2,plot);用AX,H1,H2=plotyy(x,y1,x,y2);命令。AX(1),AX(2)分别为左右Y轴的句柄%You can use the handles returned by plotyy to label the axes and set the line styles used for plotting.%With the axes handles you can specify the YLabel properties of the left- and right-side y-axis:set(get(AX(1),Ylabel),String,Slow Decay)set(get(AX(2),Ylabel),String,Fast Decay)%Use the xlabel and title commands to label the x-axis and add a title:xlabel(Time (musec)title(Multiple Decay Rates)%Use the line handles to set the LineStyle properties of the left- and right-side plots:set(H1,LineStyle,-)set(H2,LineStyle,:)-例2. 线型设置：t=0:.1:8;ax,h1,h2=plotyy(t,sin(t),t,cos(t);set(h1,linestyle,-,marker,o,color,r);set(h2,linestyle,:,marker,x,color,b);加注图例：x=linspace(0,2*pi,40);ax,h1,h2=plotyy(x,sin(x)+cos(x),x,exp(x);set(h1,linestyle,-)set(h2,linestyle,-)set(h1,marker,o)set(h2,marker,+)hold onx=linspace(0,2*pi,40);hh=line(x,cos(x);set(hh,linestyle,-)set(hh,marker,s)hold onhhf=line(x,sin(x);set(hhf,color,r)set(hhf,linestyle,-)set(hhf,marker,*)legend(h1,h2,hh,hhf,sin(x)+cos(x),exp(x),cos(x),sin(x),0);坐标轴标注：figure;t=0:.1:3*pi;H,Ha,Hb=plotyy(t,sin(t),t,exp(t);d1=get(H(1),ylabel);set(d1,string,yayacpf);d2=get(H(2),ylabel);set(d2,string,bbs from hit,fontsize,18);/wang1901/blog/item/def559ed01535fd1b31cb103.htmlmatlab中如何显示plotyy的legend举例：ax,h1,h2=plotyy(x1,y1,x2,y2);hold on;h3=plot(x3,y3);legend(h1,h2,h3,a,b,c);即可！/chenlijia_just/blog/static/19