Thread Subject:

find command in function file

function index = firm_size(r,w,z)
index=find(fl(r,w,z) < 10);
end
When I type firm_size(1,1,z_grid) (where z_grid is a known vector) I get the following error. ?? Subscript indices must either be real positive integers or logicals.

However when I type find(fl(1,1,z_grid) < 10) in the command window it works just fine. Please can anyone spot the error in my function file.
Thanks
Dhriti

"Dhrue " <dhritiman-bhattacharya@uiowa.edu> wrote in message <h3ji4k$q71$1@fred.mathworks.com>...
> function index = firm_size(r,w,z)
> index=find(fl(r,w,z) < 10);
> end
> When I type firm_size(1,1,z_grid) (where z_grid is a known vector) I get the following error. ?? Subscript indices must either be real positive integers or logicals.
>
> However when I type find(fl(1,1,z_grid) < 10) in the command window it works just fine. Please can anyone spot the error in my function file.
> Thanks
> Dhriti



And fl is....

"Matt Fig" <spamanon@yahoo.com> wrote in message <h3jk67$4hb$1@fred.mathworks.com>...
> "Dhrue " <dhritiman-bhattacharya@uiowa.edu> wrote in message <h3ji4k$q71$1@fred.mathworks.com>...
> > function index = firm_size(r,w,z)
> > index=find(fl(r,w,z) < 10);
> > end
> > When I type firm_size(1,1,z_grid) (where z_grid is a known vector) I get the following error. ?? Subscript indices must either be real positive integers or logicals.
> >
> > However when I type find(fl(1,1,z_grid) < 10) in the command window it works just fine. Please can anyone spot the error in my function file.
> > Thanks
> > Dhriti
>
>
>
> And fl is....


Its another function file

"Dhrue " <dhritiman-bhattacharya@uiowa.edu> wrote in message <h3l0n5$k6i$1@fred.mathworks.com>...
> "Matt Fig" <spamanon@yahoo.com> wrote in message <h3jk67$4hb$1@fred.mathworks.com>...
> > "Dhrue " <dhritiman-bhattacharya@uiowa.edu> wrote in message <h3ji4k$q71$1@fred.mathworks.com>...
> > > function index = firm_size(r,w,z)
> > > index=find(fl(r,w,z) < 10);
> > > end
> > > When I type firm_size(1,1,z_grid) (where z_grid is a known vector) I get the following error. ?? Subscript indices must either be real positive integers or logicals.
> > >
> > > However when I type find(fl(1,1,z_grid) < 10) in the command window it works just fine. Please can anyone spot the error in my function file.
> > > Thanks
> > > Dhriti
> >
> >
> >
> > And fl is....
>
>
> Its another function file

well, it looks like you have a variable FL in your file...
do this:
- edit your function...
- set a break-point (dbstop) just before the call to FL...
- run your function...
- it stops...
- at the command prompt, type
     whos fl;
     which fl -all;
- look at the results

us

Either that or the OP did something like this:

>>firm_size = firm_size(r,w,z);
>>firm_size = firm_size(r2,w2,z2); % z2 contains a zero or neg. num.
   ?? Subscript indices must either be real positive integers or logicals.