matlab - 1 个循环中的多个图形，每次迭代在每个图形上添加一条线

Question

尝试在 Matlab 中设计以下内容:

** loop start;
   y(:,i) = function of x;
   z(:,i) = function of x;
   plot(x,y(:,i))   on figure 1, hold all;
   plot(x,z(:,i))   on figure 2, hold all;
** loop end;
   add title, legend, etc for figure 1 (NB: we have multiple lines);
   add title, legend, ets for figure 2 (NB: same, have multiple lines for the legend);`

尝试了多种组合，但运气不佳。设法得到 2 个数字，但只有第 2 个数字显示多行，而不是第一个。并且不知道如何正确地为这两个添加图例。

Answer 1

保存每个图形和每个轴对象的句柄:

fh1 = figure;
hold all;
ah1 = gca;

fh2 = figure;
hold all;
ah2 = gca;

for i=1:N
    y(:,i) = function of x;
    z(:,i) = function of x;
    plot(ah1, x, y(:,i)); %# tell it which axis to use (ah1)
    plot(ah2, x, z(:,i)); %# (ah2)
end

legend(ah1, ...) %# legend options here
legend(ah2, ...) %# and the other legend

%# note: you can set figure properties for each using fh1, fh2 handles.