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error: Index exceeds matrix dimensions

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Elia
Elia on 27 Dec 2013
Edited: Image Analyst on 28 Dec 2013
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 Comments
Jan
Jan on 28 Dec 2013
@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.

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Answers (2)

Lennart
Lennart on 27 Dec 2013
Try the squeeze() command, sometimes non functional extra dimensions are created which give these kinds of problems.

Image Analyst
Image Analyst on 28 Dec 2013
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 Comments
Image Analyst
Image Analyst on 28 Dec 2013
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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