Thread Subject:

Problems with inputdlg!

I am getting an index exceeds matrix dimensions error I do not understand.

Here is the code in question:

prompt = {'Enter element number:'};
    dlg_title = 'Element input for strain calculation';
    num_lines = 1;
    def = {'1'};
    global answer;
    answer = inputdlg(prompt,dlg_title,num_lines,def);
    xl = answer{1};
    disp(['The strain on element ' answer{1} ' is: '])
    disp(num2str(strain_output(xl,2)));

I am inputting 1 while strain_output is 2x3 and I still receive this error. I assume it has something to do with answer being a cell array but I have no idea how to fix it. Any help is greatly appreciated. Thanks.

harrison fast wrote:
> I am getting an index exceeds matrix dimensions error I do not understand.
>
> Here is the code in question:
>
> prompt = {'Enter element number:'};
> dlg_title = 'Element input for strain calculation';
> num_lines = 1;
> def = {'1'};
> global answer;
> answer = inputdlg(prompt,dlg_title,num_lines,def);
> xl = answer{1};
> disp(['The strain on element ' answer{1} ' is: '])
> disp(num2str(strain_output(xl,2)));
>
> I am inputting 1 while strain_output is 2x3 and I still receive this
> error. I assume it has something to do with answer being a cell array
> but I have no idea how to fix it. Any help is greatly appreciated. Thanks.

xl = str2num(answer{1}); % inputdlg returns string, not numeric value

--

"harrison fast" <hjfast@gmail.com> wrote in message <i7td1j$hb8$1@fred.mathworks.com>...
> I am getting an index exceeds matrix dimensions error I do not understand.
>
> Here is the code in question:
>
> prompt = {'Enter element number:'};
> dlg_title = 'Element input for strain calculation';
> num_lines = 1;
> def = {'1'};
> global answer;
> answer = inputdlg(prompt,dlg_title,num_lines,def);
> xl = answer{1};
> disp(['The strain on element ' answer{1} ' is: '])
> disp(num2str(strain_output(xl,2)));
>
> I am inputting 1 while strain_output is 2x3 and I still receive this error. I assume it has something to do with answer being a cell array but I have no idea how to fix it. Any help is greatly appreciated. Thanks.

It must be that the number x1 is greater than the first dimension of strain_output or that strain_output is a column vector.