On 02/03/2015 11:54 AM, Neuron wrote:
> I often need to do searches in various portions of a vector but I don't
> want the indices based on the portion but on the whole vector. Is there
> a more formal way than doing this:
>
> find(y(5:10))+5-1
Not really, no; the argument to find() is a vector of length 6. The
only other way would be to prepend something in place of the elements
y(1:4) so the overall length is still length(y). In this particular
case given you're looking for ~0 then
find([zeros(1,4) y(5:10)]) returns the same locations but relative to
y(1). However, I suspect it actually is more overhead than the
alternative of correcting for the start location.
--
> I often need to do searches in various portions of a vector but I don't
> want the indices based on the portion but on the whole vector. Is there
> a more formal way than doing this:
>
> find(y(5:10))+5-1
Not really, no; the argument to find() is a vector of length 6. The
only other way would be to prepend something in place of the elements
y(1:4) so the overall length is still length(y). In this particular
case given you're looking for ~0 then
find([zeros(1,4) y(5:10)]) returns the same locations but relative to
y(1). However, I suspect it actually is more overhead than the
alternative of correcting for the start location.
--