copy subplots within same figure

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William Rose
William Rose 2024-4-19
编辑： William Rose 2024-4-20
Ran in:
I am copying subplots within a figure, to show the same data with an expaned time base.
As you can see from the example below, the copied subplots overlap somewhat, and the legends do not get copied. Is there a better way to do this?
t=(0:200)';
x=[cos(t),sin(t),cos(t/2),sin(t/2),cos(t/4),sin(t/4)];
fig1=figure(1);
ax1(1,1)=subplot(321);
plot(t,x(:,1),'-r',t,x(:,2),'-g');
xlabel('Time'); ylabel('XA'); title('A'); legend({'cos','sin'})
ax1(2,1)=subplot(323);
plot(t,x(:,3),'-b',t,x(:,4),'-c');
xlabel('Time'); ylabel('XB'); title('B'); legend({'cos','sin'})
ax1(3,1)=subplot(325);
plot(t,x(:,5),'-m',t,x(:,6),'-y');
xlabel('Time'); ylabel('XC'); title('C'); legend({'cos','sin'})
% Next: Copy column 1 plots to column 2, and adjust axes.
for i=1:3
axtemp=subplot(3,2,2*i);
ax1(i,2)=copyobj(ax1(i,1),fig1);
ax1(i,2).Position=axtemp.Position;
delete(axtemp)
xlim([0,20])
end
Thank you.
  1 个评论
William Rose
William Rose 2024-4-19
If I remove the horizontal axis labels ('Time') from the upper and middle plots on the left, the problem is less bad, but still, the copied plots are taller than the column 1 plots, which doesn't look good.

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采纳的回答

Paul
Paul 2024-4-19
编辑：Paul 2024-4-20
Ran in:
Hi William,
Use the subplot command as shown below to get the new axes aligned with the old. The legends need to be copyobj'd along with the axes.
t=(0:200)';
x=[cos(t),sin(t),cos(t/2),sin(t/2),cos(t/4),sin(t/4)];
fig1=figure(1);
ax1(1,1)=subplot(321);
plot(t,x(:,1),'-r',t,x(:,2),'-g');
xlabel('Time'); ylabel('XA'); title('A'); L(1,1) = legend({'cos','sin'});
ax1(2,1)=subplot(323);
plot(t,x(:,3),'-b',t,x(:,4),'-c');
xlabel('Time'); ylabel('XB'); title('B'); L(2,1) = legend({'cos','sin'});
ax1(3,1)=subplot(325);
plot(t,x(:,5),'-m',t,x(:,6),'-y');
xlabel('Time'); ylabel('XC'); title('C'); L(3,1) = legend({'cos','sin'});
% Next: Copy column 1 plots to column 2, and adjust axes.
for i=1:3
% axtemp=subplot(3,2,2*i);
htemp = copyobj([ax1(i,1) L(i)],fig1);
ax1(i,2) = htemp(1);
% Save handle to new legend if desired.
% Corrected based on W. Rose comment below.
% L(3,2) = htemp(2);
L(i,2) = htemp(2);
subplot(3,2,2*i,ax1(i,2))
% ax1(i,2).Position=axtemp.Position;
% delete(axtemp)
xlim([0,20])
end
  3 个评论
显示 1更早的评论
Paul
Paul 2024-4-20
编辑：Paul 2024-4-20
You're right, it should've been L(i,2). It doesn't serve any purpose other than to provide a handle to the new legends should such legend handles be needed. I'll edit the post and fix code.
I was not aware of ax.Legend shown by @Voss, which avoids the need to create any legend handles.
William Rose
William Rose 2024-4-20
编辑：William Rose 2024-4-20
Ran in:
So I can combine the @Voss and @Paul solutions. Forr some reason, on my system at least, Voss's solution makes column 2 plots that are sightly less tall than the corresponding column 1 plots. The combination of both approaches is below, and I appreciate it. Thank you both.
t=(0:200)';
x=[cos(t),sin(t),cos(t/2),sin(t/2),cos(t/4),sin(t/4)];
fig1=figure(1);
ax1(1,1)=subplot(321);
plot(t,x(:,1),'-r',t,x(:,2),'-g');
xlabel('Time'); ylabel('XA'); title('A'); legend({'cosA','sinA'});
ax1(2,1)=subplot(323);
plot(t,x(:,3),'-b',t,x(:,4),'-c');
xlabel('Time'); ylabel('XB'); title('B'); legend({'cosB','sinB'});
ax1(3,1)=subplot(325);
plot(t,x(:,5),'-m',t,x(:,6),'-y');
xlabel('Time'); ylabel('XC'); title('C'); legend({'cosC','sinC'});
% Next: Copy column 1 plots to column 2, and adjust axes.
for i=1:3 % Voss's & Paul's solution
htemp = copyobj([ax1(i,1) ax1(i,1).Legend],fig1);
ax1(i,2) = htemp(1);
subplot(3,2,2*i,ax1(i,2))
xlim([0,20])
end

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更多回答（1 个）

Voss
Voss 2024-4-19
Ran in:
To copy the legends, copy each with its associated axes (vector of objects to copyobj).
To fix the overlapping, set the OuterPosition the same, rather than the Position.
t=(0:200)';
x=[cos(t),sin(t),cos(t/2),sin(t/2),cos(t/4),sin(t/4)];
fig1=figure(1);
ax1(1,1)=subplot(321);
plot(t,x(:,1),'-r',t,x(:,2),'-g');
xlabel('Time'); ylabel('XA'); title('A'); legend({'cos','sin'})
ax1(2,1)=subplot(323);
plot(t,x(:,3),'-b',t,x(:,4),'-c');
xlabel('Time'); ylabel('XB'); title('B'); legend({'cos','sin'})
ax1(3,1)=subplot(325);
plot(t,x(:,5),'-m',t,x(:,6),'-y');
xlabel('Time'); ylabel('XC'); title('C'); legend({'cos','sin'})
% Next: Copy column 1 plots to column 2, and adjust axes.
for i=1:3
axtemp=subplot(3,2,2*i);
temp=copyobj([ax1(i,1) ax1(i,1).Legend],fig1);
ax1(i,2) = temp(1);
ax1(i,2).OuterPosition=axtemp.OuterPosition;
delete(axtemp)
xlim([0,20])
end

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