Thread Subject: Help on fixing error

??? Error using ==> sub2ind at 58
Out of range subscript.

Error in ==> EF4SAPSLMETARAPS at 351
                    EijF(sub2ind(size(EijF), Eij_CM(:,1:end-1), Eij_CM(:,2:end)))=...
                    EijF(sub2ind(size(EijF), Eij_CM(:,1:end-1), Eij_CM(:,2:end))) + (1/S(s))/E_B;

Sometimes it work and sometimes it shows this error. What does it mean?

Thanks!
                    

"Diego Zegarra"
> ??? Error using ==> sub2ind at 58
> Out of range subscript.
> Error in ==> EF4SAPSLMETARAPS at 351
> EijF(sub2ind(size(EijF), Eij_CM(:,1:end-1), Eij_CM(:,2:end)))=...
> EijF(sub2ind(size(EijF), Eij_CM(:,1:end-1), Eij_CM(:,2:end))) + (1/S(s))/E_B;
>
> Sometimes it work and sometimes it shows this error. What does it mean...

as the error message clearly says: the inputs to SUB2IND cannot(!) give a valid result, in particular, if one looks at your vars

     size(EijF)
     Eij_CM(:,1:end-1) % one or more indices > size(...,1)
     Eij_CM(:,2:end) % one or more indices > size(...,2)

since this does not happen regularly, you might consider doing this

% at the command prompt
     dbstop if error
% run your function
% if an error occurrs, it will stop in the current function/ws
% now carefully inspect your vars

us

Ok I found what the error was but I am having trouble solving it, the thing is before this lines I use the PADCAT function to change a cell of different dimensions into a matrix form where the spaces are padded by zeros or NaN if wanted. The thing is that whenever it pads the matrix then it finds a zero and that is a number I dont want to look at. So let's say I have the following cell,

a={[5 4 1 7];[6 2 3]};
It will change it to look like this,

a=
5 4 1 7
6 2 3 0

or

5 4 1 7
6 2 3 NaN

E = zeros(7);
E(sub2ind(size(E), a(:,1:end-1), a(:,2:end)))

Since 0 is not considered in E then it shows the error because there is no row or column with that index in E.

Any idea how this could be done?

Thanks!

Ok I found what the error was but I am having trouble solving it, the thing is before this lines I use the PADCAT function to change a cell of different dimensions into a matrix form where the spaces are padded by zeros or NaN if wanted. The thing is that whenever it pads the matrix then it finds a zero and that is a number I dont want to look at. So let's say I have the following cell,

a={[5 4 1 7];[6 2 3]};
It will change it to look like this,

a=
5 4 1 7
6 2 3 0

or

5 4 1 7
6 2 3 NaN

E = zeros(7);
E(sub2ind(size(E), a(:,1:end-1), a(:,2:end)))

Since 0 is not considered in E then it shows the error because there is no row or column with that index in E.

Any idea how this could be done?

Thanks!