Displaying 1 result from an estimated 1 matches for "tp3328647p3328862".
2011 Feb 28
3
nls not solving
I am running the following nls equation. I tried it with data that excel was
fitting and got the error:
singular gradient matrix at initial parameter estimates
I thought it was due to a low number of points (6), but when I create a
dataset, I get the same problem. If I remove the parameter "a," then it can
find a solution. Does anyone know what I can do to fit this model?