error: Index exceeds matrix dimensions

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

[Azzi Abdelmalek]

Post the entire error message

[Elia]

Index exceeds matrix dimensions.
Error in fplot (line 96)
xmin = min(lims(1:2)); xmax = max(lims(1:2));
Error in Sprov>XfuncTable_plot_Callback (line 453)
      fplot(X1,T1,'Parent',handles.axes2);

Error in gui_mainfcn (line 96)
      feval(varargin{:});

Error in Sprov (line 42)
  gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Sprov('XfuncTable_plot_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

[dpb]

xmin = min(lims(1:2)); xmax = max(lims(1:2));

What's lims and where's it supposed to have come from?

[Azzi Abdelmalek]

This is from fplot function

[dpb]

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...

[Elia]

What exactly do you mean with '' needs to pass the range as the vector [10:50] '' ?

[Jan]

@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.

Answer 1

[Lennart]

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

[Elia]

where should i use it ?

Answer 2

[Image Analyst]

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.

[Image Analyst]

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]

i didn't understand exactly what do you mean ,where should i place the plot ? can you please show me howe the code will look like ? i tried without if-else loop (just for loop )i became the same problem too.

best regards sam

[Image Analyst]

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