SearchGammaTable

Psychtoolbox › PsychCal

values = SearchGammaTable(targets, input, table)

Return the [0-1] entry from the passed table that produces
output closest to the [0-1] target.

The targets are assumed to be a row vector.
The table is assumed to be a column vector.
The returned indices and values are are row vectors.

Works by exhaustive search. A binary search might be faster
but would be harder to vectorize. I suspect that this is
a fast Matlab implementation, but those who want to try are
welcome to try to do better. (Remember, though, that this
routine gains in efficiency the more searches are done at once.
This is because it contains no dreaded loops.)

4/2/94 dhb Added code that checks for special case of zero output.
4/4/94 dhb Fixed code added on 4/2.
4/5/94 jms Fixed code added on 4/2.
1/21/95 dhb Write search as a loop. Loses time and elegance,
11/16/06 dhb Renamed as SearchGammaTable.
11/20/06 dhb Finish update by calling through MATLAB's interpolation function.
9/15/08 dhb Handle case where there are a bunch of zeros at the beginning of gamma table.