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2011 Feb 16
1
help with spatstat ppp transformation data
...tion of lizards in Spain and Germany. For this I am using the spatstat package of R to make a Kolmogorov-Smirnov test of CSR of unmarked points data. I have problems transforming the data to ppp class, and I would like to know if you can help me. I have already made the test with the data of 'japanesepines' that comes with the package, and is very easy, I could do it. But when trying with my own dataframe, I cannot transform them to ppp class, this is what appears: p<-ppp(x,y, c(0,40), c(0,80)) Error en ppp(x, y, c(0, 40), c(0, 80)) : coordinate vectors x and y are not of equal length S...