Hi, I', trying to implement a series of species distribution models. I am working with seasonal data and as I want to project them to several different scenarios, i need to use strictly samples with data format. I have extracted the background and pseudoabsences points from their corresponding raster files, so nos i want to fit the maxlike and maxent models and then project them with different rasterStack objects. The problem is that i haven't found out if there's a data.frame method for maxlike, there's no reference to such a thing in the reference manual. Besides, for maxent, the sdm vignete only describes how to run maxent with a rasterStack. I have found out how to specify pseudoabsences for maxent providing a vector with 1's and 0's, but no method as to specify a data frame with the background data.

Regards

Gerardo

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