How to write your own non-linear model

[#1]

I need to analyze my data using the Von Bertalanffy Growth function to my data (age vs Length). But I couldn’t figure out where and how to write my own non-linear regression model. Need help. My model is:

a*(1-exp(-(b*(age-c))))

[#2]

Hi, ukhandurrani!

If you include a data table with your request for help (either yours or an example), the helpful responses you receive may be more implementable for you.

Kevin