matlab在一个坐标系,[转载]【Matlab】 如何在一张图上画多个坐标轴

文件交流上好像有画3y轴的函数&＃xff1a;

function

[ax,hlines] &＃61; plotyyy(x1,y1,x2,y2,x3,y3,ylabels)

%PLOTYYY - Extends plotyy to include a third

y-axis

%Syntax: [ax,hlines] &＃61;

plotyyy(x1,y1,x2,y2,x3,y3,ylabels)

%Inputs: x1,y1 are the xdata and ydata for the first axes&＃39;

line

% x2,y2 are the

xdata and ydata for the second axes&＃39; line

% x3,y3 are the

xdata and ydata for the third axes&＃39; line

% ylabels is a

3x1 cell array containing the ylabel strings

%Outputs: ax - 3x1 double

array containing the axes&＃39; handles

% hlines - 3x1

double array containing the lines&＃39; handles

%Author: Denis Gilbert, Ph.D., physical

oceanography

%Maurice Lamontagne Institute

&＃xfffd;pt. of Fisheries and Oceans Canada

%email:

%Web:http://www.qc.dfo-mpo.gc.ca/iml/

%April 2000; Last revision: 14-Nov-2001

if nargin&＃61;&＃61;6

ylabels{1}&＃61;&＃39; &＃39;; ylabels{2}&＃61;&＃39;

&＃39;; ylabels{3}&＃61;&＃39; &＃39;;

elseif nargin > 7

error(&＃39;Too many input

arguments&＃39;)

elseif nargin <6

error(&＃39;Not enough input

arguments&＃39;)

end

figure(&＃39;units&＃39;,&＃39;normalized&＃39;,...

&＃39;DefaultAxesXMinorTick&＃39;,&＃39;on&＃39;,&＃39;DefaultAxesYminorTick&＃39;,&＃39;on&＃39;);

[ax,hlines(1),hlines(2)] &＃61; plotyy(x1,y1,x2,y2);

cfig &＃61; get(gcf,&＃39;color&＃39;);

pos &＃61;

[0.1 0.1 0.7 0.8];

offset &＃61; pos(3)/5.5;

pos(3) &＃61; pos(3) - offset/2;

set(ax,&＃39;position&＃39;,pos);

pos3&＃61;[pos(1) pos(2) pos(3)&＃43;offset pos(4)];

limx1&＃61;get(ax(1),&＃39;xlim&＃39;);

limx3&＃61;[limx1(1) limx1(1) &＃43;

1.2*(limx1(2)-limx1(1))];

ax(3)&＃61;axes(&＃39;Position&＃39;,pos3,&＃39;box&＃39;,&＃39;off&＃39;,...

&＃39;Color&＃39;,&＃39;none&＃39;,&＃39;XColor&＃39;,&＃39;k&＃39;,&＃39;YColor&＃39;,&＃39;r&＃39;,...

&＃39;xtick&＃39;,[],&＃39;xlim&＃39;,limx3,&＃39;yaxislocation&＃39;,&＃39;right&＃39;);

hlines(3) &＃61;

line(x3,y3,&＃39;Color&＃39;,&＃39;r&＃39;,&＃39;Parent&＃39;,ax(3));

limy3&＃61;get(ax(3),&＃39;YLim&＃39;);

line([limx1(2) limx3(2)],[limy3(1) limy3(1)],...

&＃39;Color&＃39;,cfig,&＃39;Parent&＃39;,ax(3),&＃39;Clipping&＃39;,&＃39;off&＃39;);

axes(ax(2))

set(get(ax(1),&＃39;ylabel&＃39;),&＃39;string&＃39;,ylabels{1})

set(get(ax(2),&＃39;ylabel&＃39;),&＃39;string&＃39;,ylabels{2})

set(get(ax(3),&＃39;ylabel&＃39;),&＃39;string&＃39;,ylabels{3})

% 例子

% x &＃61; [0 0.1 0.2 0.3 0.4 0.426 0.5 0.6 0.688 0.7 0.8 0.9

1.0];

% y &＃61; [268.95 272.36 275.07 277.07 277.93 278 276.5 267.16 248.2

244.3 200.37 137.71 58.7];

% a &＃61; [0 0.225 0.408 0.566 0.693 0.718 0.776 0.82 0.831 0.831 0.818

0.784 0.6];

% k &＃61; [2.55 2.254 2.063 1.886 1.733 1.687 1.552 1.368 1.207 1.187

1.023 0.873 0.6];

% ylabels{1}&＃61;&＃39;轴1&＃39;;

% ylabels{2}&＃61;&＃39;轴2&＃39;;

% ylabels{3}&＃61;&＃39;轴3&＃39;;

% [ax,hlines] &＃61; plotyyy(x,y,x,a,x,k,ylabels);

% legend(hlines, &＃39;y &＃61; x&＃39;,&＃39;a &＃61;x&＃39;,&＃39;k &＃61; x&＃39;,2)