why do i get a straight line transit fit?

Posted by gboyle on Apr 05, 2019; 11:20am
URL: http://astroimagej.170.s1.nabble.com/why-do-i-get-a-straight-line-transit-fit-tp1121.html

my data suggests a decent curve but for some reason the model plot is a straight line..
anything obviously wrong?
thanks
gavin