ans10_4.m

来自「MATLABR2007教程以及i习题和答案」· M 代码 · 共 24 行

t = -2:0.1:2;
x = cos(t/pi);
y = 2*sin(t/(2*pi));
figure,plot(t,x);
hold on; plot(t,y);
%if waitforbuttonpress
while(1)
    if waitforbuttonpress==0
        get(gcf,'CurrentObject');
        c = ceil((rand) * 5);
        switch c
            case 1
                set(get(gcf,'CurrentObject'),'Color', 'r');
            case 2
                set(get(gcf,'CurrentObject'),'Color', 'g');
            case 3
                set(get(gcf,'CurrentObject'),'Color', 'b');
            case 4
                set(get(gcf,'CurrentObject'),'Color', 'k');
            case 5
                set(get(gcf,'CurrentObject'),'Color', 'y');
        end
    end
end