search for: radius_eff

...I am trying to minimize a function which contains a double integral, using "nlminb" for the minimization and "adapt" for the integral. The integral is over two variables (thita and radiusb) and the 3 free parameters I want to derive from the minimization are counts0, index and radius_eff. I have used both tasks in the past successfully but this is the first time I've tried using the functions where the free parameters are contained within the integral. My code is copied below: ############## Begin of the code alpha=3.99 vita=4.4 ellip=0.2 majaxis_pix=c(3.0 6.5 10.0 13.5 17....