Symbolic object and uitable

Hi,

I have question and problem also with program in Matlab-guide.

 My program works only with numbers 1,2,3......., but I need also insert to the uitable symbolic objects and calculate with symbolic objects also.
I want use uitable, and uitable should present matrix named for example a. I need insert numbers ” 1, 2, 3,…” and symbolic objects "a, b,c,….” to the table.

 Program is doing  multiplication of two matrix.

Please, can you help my?

PS: 
Here is example in M-file. i3 = sym(‘i3′,’real’); a=[ 0 0 i3; 1 2 3]; b=[2 2; 2 2; 2 2]; c=a*b;

But I need something like this in GUIDE with uitable.

If you have better idea, how could I fill the matrix, please let me know.

Answer 1

[Walter Roberson]

You cannot put symbolic objects in a uitable.

If you have a uitable entry which you intend to be able to hold either a number or a symbol, then that uitable column must be set to be of character type, and any place that you suspect you may have a number, you have to check and convert the string representation of the number to a numeric value.

I have indicated both of the above facts to you in previous threads.

[john]

My english in not perfect. So do I understand, is it not possible what I need?

1. And how can I check and how can I convert the string representation of the number to a numeric value?

2. Can I create matrix like cell, then put in numbers and symbolic objects and then convert matrix to numbers? If yes, how?

3. So how can I fill my matrix with numbers and symbolic object?

[john]

Mr. Walter Roberson,

could you help me? Please

I don't understand what to do, what do You mean in previous threads.

[john]

I have one idea:

function pushbutton5_Callback(hObject, eventdata, handles)

h=findobj(0,'Type','figure','Tag','figure1');

UserData=get(h,'UserData');

syms R1 R2 R3 'real';

va=size(UserData.matrixA);

for i=1:va(1)

for j=1:va(2)

if (isnan(str2double(UserData.matrixA{i,j})))

MA(i,j)=findsym(UserData.maticaA{i,j});

else

MA(i,j)=str2double(UserData.maticaA{i,j});

end

end

end

MC=MA*MA;

set(handles.uitable2, 'Data',MC);

Problem is that UserData.matrixA{i,j} is type char: Undefined function or method 'findsym' for input arguments of type 'char'.

Maybe this idea is wrong