theta = 0:pi/100:2*pi;
circleX = cos(theta);
circleY = sin(theta);  %圆

x = -1:0.01:1;
y = -x.^2;  %双曲线

figure;

%subplot('position', [left bottom width height]);
%精细微调：[距离左边 距离下边 图宽 图高]
%SUBPLOT('position',[left bottom width height]) creates an
%   axes at the specified position in normalized coordinates (in
%   in the range from 0.0 to 1.0).

subplot('position', [0.4 0.6 0.6 0.4]);
plot(x, y);
set(gca,'xtick',[],'ytick',[]);  %去掉刻度

subplot('position', [0  0 0.4 0.6]);
plot(-y, x);  %相当于将图plot(x,y)逆时针旋转90度
set(gca,'xtick',[],'ytick',[]);  %去掉刻度

subplot('position', [0.4  0 0.6 0.6]);
plot(circleX, circleY);
set(gca,'xtick',[],'ytick',[]);  %去掉刻度

2楼: Originally posted by sudo at 2011-09-13 15:01:12:
可以用subplot实现