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"Attempt to reference field of non-structure array" error in cell2mat function

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Sam136
Sam136 2015-6-26
关闭： MATLAB Answer Bot 2021-8-20
In my dynamic programming code, all values in each step are scalar except one which is a cell. This cell is generated in a main code and the dynamic programming uses this cell in another function, but I get this error: "Attempt to reference field of non-structure array". Any help?

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Image Analyst
Image Analyst 2015-6-26
You make it really difficult to do without code. As far as I know, only Walter had the Mind Reading Toolbox so far. Until the rest of us get it, read this http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
Chances are you're doing something like
value = myStruct.myField;
and the variable myStruct of yours is not a structure, and so has no fields. So you can't reference the .myField field of it. If you had posted the complete error message ( ALL the red text), instead of just a small snippet excerpted from it, then you'd probably have your answer by now.
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Sam136
Sam136 2015-6-26
Thanks for you comment. First, the reason that I didn't copy my code was that it is very long code and I don't know which part of my code can help. Second, here is the whole error:
Attempt to reference field of non-structure array. Error in dpm>dpm_boundary_line_lower (line 1018) vsize = size(dynb.Jo);
Error in dpm>dpm_backward (line 468) dyn.B.lo = dpm_boundary_line_lower(model,par,grd,dis,options);
Error in dpm (line 407) dyn = dpm_backward(model,par,grd,dis,options);
Error in truck_main (line 156) [res dyn] = dpm(@truck,[],grd,prb,options);
Walter Roberson
Walter Roberson 2015-6-26
Your dynb is either one of the arguments passed in or else it is calculated from the arguments. We do not know which. However it is being created, it is not a structure when it is expected to be.

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