Undefined function 'times' for input arguments of type 'cell'.

Hi Guys,

I have this error when i use fsolve to solve my equation which uses arrays from the two tables I have defined. The table data are doubles and however I thought it could solve it but it keeps giving me an error saying: "Undefined function 'times' for input arguments of type 'cell'". I have defined two tables called S and R which have 1 column each i.e. column matrix. Would anyone know why fsolve doesn't solve it? I have tried debugging and it gets stuck when i define myfun i.e function to solve. It worked normally before just not in the GUI.

Any help would be extremely appreciated.

Answer 1

[Walter Roberson]

When you get() the Data from a uitable, the result is a cell array. If you want to convert the cell to a numeric matrix, use cell2mat(). For example,

X = cell2mat( get(handles.S, 'Data') );

One thing to watch out for is that it is not uncommon for the Data value of a uitable to be set to a cell array of strings, as using a cell array of strings allows you to control the exact format of the output display. If that has been done, if you are working with a cell array of strings that represent numbers, then you can use

X = str2double(get(handles.S, 'Data'));

with no cell2mat() needed. Note that any string not representable as a single number would be converted as NaN

[sarah]

Thank you so much. I wanted to ask you another thing.

I'm trying to fsolve my equation. In GUI it gives me a complex and completelty wrong answer whereas if I try the same thing in normal command window it gives me good answer. I'm unsure why that is? I checked all my variables are doubles but fsolve gives b equal to complex for some reason

Answer 2

[Greig]

The most likely problem is that X and/or Y are cells. If so, then you will want to have a look are cell2mat to fix this.

[sarah]

Thanks :)