vlt.neuro.vision.oridir.index.fit2null
FIT2NULL - calculate the null (anti-preferred) response from a fit to direction
NULL=vlt.neuro.vision.oridir.index.fit2null(RESPONSE)
Given the RESPONSE of a double gaussian fit, return the response 180 degrees
away from the location with the maximum response. This is the null
response or the response in the anti-preferred direction.
RESPONSE is a 360x2 vector of responses. The first row indicates the
angles of the fit, and the second row indicates the responses.
For backwards compatibility, if RESPONSE is a 360x1 vector, a new first
row is added equal to 0:359.
See also: vlt.neuro.vision.oridir.index.fit2pref, vlt.neuro.vision.oridir.index.fit2orth