I have two very similar datasets with environmental parameters and abundance. I'm using Gaussian Process to evaluate how the environmental parameters influence abundance. On one dataset, the model runs fine and I get good results. When I try with the other, I get an error message saying "Unable to estimate Gaussian Process model. No valid starting values found". I can't find anywhere online what the specifications for the model is or what I might be doing wrong. The only real difference between the two is sample size - the one that works has close to 400 observations and the one that doesn't has around 100. Any ideas?
