error: Index exceeds matrix dimensions
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i have created an eatable with two columns , a plot button and two buttons for editing the row's number(add/delete), the ColumnFormat is char .the first column contains the function's body (for example sin(t) ) , and the second column contains the time limit , that i want to plot the function between it (for example [10 50]).when i press the plot button , on the command window appears the following error : 'Index exceeds matrix dimensions.' where is the mistake in the code ?
here is the plot callback function
D=cell2mat(get(handles.table,'data'));
if size(D,1)==1 %number of rows
T1=str2num(D(1,2));
X1=str2func(['@(t)' D(1,1)]);
fplot(X1,T1,'Parent',handles.axes1);
else
for i=1:size(D,1)
Ti=str2num(D(i,2));
Xi=str2func(['@(t)' D(i,1)]);
fplot(Xi,Ti,'Parent',handles.axes1);
hold(handles.axes1, 'on')
end
end
hold(handles.axes1, 'off')
grid on
7 个评论
Azzi Abdelmalek
2013-12-27
Post the entire error message
Elia
2013-12-27
编辑：Azzi Abdelmalek
2013-12-27
dpb
2013-12-27
xmin = min(lims(1:2)); xmax = max(lims(1:2));
What's lims and where's it supposed to have come from?
Azzi Abdelmalek
2013-12-27
This is from fplot function
dpb
2013-12-27
Ahhhh...indeed! My bad.
Looks to me like he's got a formatting problem in defining his input to the function -- he gives as an example that the function string is sin(t) and wants to plot the function between two limits that he gives as a vector [10 50]. I've not done this specifically and it's not convenient at the moment to fire up Matlab to test but I'm thinking needs to pass the range as the vector [10:50]?
But still not sure that'll cure the internal problem...
Jan
2013-12-28
@Sam: Please do not post a question in multiple forums. If you have a really good reason to do so, add at least a link to the other forum. Otherwise the voluntary helpers might waste time with posting an answer, which has been given elsewhere already. Thanks.
回答（2 个）
Lennart
2013-12-27
0 个投票
Try the squeeze() command, sometimes non functional extra dimensions are created which give these kinds of problems.
Image Analyst
2013-12-28
0 个投票
Remove the fplot call from the "if size(D,1)==1" block and that will probably solve it. It probably doesn't like it when you're calling fplot with just one point. lims is probably a one element vector in that case, and when it hits lims(1:2) it barfs.
3 个评论
Image Analyst
2013-12-28
In the "else" block, I'd also take it out of the for loop and put it right after the "end" of the for loop.
Elia
2013-12-28
Image Analyst
2013-12-28
编辑：Image Analyst
2013-12-28
Xi and Ti are just single numbers, not arrays. You need to make them arrays, and then you don't need to have a special case for the first element:
D=cell2mat(get(handles.table,'data'));
for i=1:size(D,1)
T(i) = str2num(D(i,2));
X(i) = str2func(['@(t)' D(i,1)]);
end
fplot(Xi,Ti,'Parent',handles.axes1);
hold(handles.axes1, 'off')
grid on
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2013-12-28
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