Undefined function or method 'mrdivide'

I am writing a code in matlab GUI and using uitable... Code in which error is there is given below

data=get(handles.uitable1,'data');
A(:,1)=data(:,2);
B(:,1)=(0.56*0.65)/A(:,1);

Error is undefined function or method 'mrdivide' Can anyone plz help me to fix this issue ?

[Stephen23]

The uitable data field can by a numeric, logical, or cell array. Possibly you have a cell array, in which case numeric operations are not defined for it. Solution: use a numeric array.

[Gaurav]

Being new to matlab.... I dont know from where i can choose whether it is a cell array or numeric array.... or any other array type .. Where can i select thpe of array in gui Thnx in advance

Answer 1

[Image Analyst]

Try doing an element by element divide with dot slash, and see if that fixes it:

whos A
B(:, 1) = (0.56 * 0.65) ./ A(:, 1);  % Note: ./ NOT just simply /

If B is not defined as a 2-D array in advance, then you can get rid of the (:,1) and simply have

B = (0.56 * 0.65) ./ A(:, 1);  % Note: ./ NOT just simply /

Answer 2

[Steven Lord]

I think Stephen's suspicion that A is a cell array is correct. To confirm this, add this line immediately after the line where you define A then run your code.

disp(class(A))

If this displays the word "cell", A is a cell array. If a regular numeric array is a walnut meat, a cell array containing numeric arrays is a walnut shell. You need to crack it open to get at the meat inside. You do that using curly brace indexing.

A = {1, 2:3, [4 5; 6 7]}
B = A(2)
C = A{2}
whos A B C

In that example, A and B are cell arrays. C is the contents of the second cell of the cell array A and so is a double array. Your code currently operates on B, but you want it to operate on C.

[Gaurav]

Yes....u r right... All the data is in the form of array.... Now the problem is even if i have used curly brackets and done all the things proparly for matrix manipulations....(mrdivide error is eliminated now.)...but i still have problem for calculations as uitable is storing every single digit as a separate element in matrix..... Is there any way so that i can directly convert uitable data array in simple matrix form???

[Walter Roberson]

If every digit is stored separately then it is likely stored as a character vector. The single easiest way to prevent this is to initialize the Data property of the uitable as numeric such as zeros() of appropriate size.

[Image Analyst]

You forgot to show the results of the "whos A" command, like I had in my code. Please do so.

There are arrays, and cell arrays (a special type of array). When you say "All the data is in the form of array" I do not know what you're talking about. Is A a double array? A cell array? A cell array that contains an array inside each cell?

Please read the FAQ on cell arrays before replying: http://matlab.wikia.com/wiki/FAQ#What_is_a_cell_array.3F

[Gaurav]

Thanx everyone... for your help... i have initiated array as a zeros() and it also works perfectly....