[R] Spatial data, rpoispp, using window with fixed radius?

Dear All, I was searching through the spatstat manual in order to find a function to simulate a Poisson pattern only within a fixed radius (circular moving window) around individual points. If points are distributed heterogeneously over a large area this may help to only assess deviation from

[R] Pearson correlation coefficient matrix with permutation test

Hello, I found an interesting program on Pierre Legendre's webpage: http://www.bio.umontreal.ca/casgrain/en/labo/corr_permute.html With this program one can compute a Pearson correlation coefficient matrix with permutation test. This is exactly what I need as an R-package because so far I

Re: [R] Pearson correlation coefficient matrix with permutation test

Hello Gabor, Thanks for your response. There are certainly several offers in R to construct confidence envelopes. But here I am specifically interested in sort of a summary output such as provided by the function cor(). I have more than a thousand correlations and I just need for each

[R] How to create matrix for if-else application with i?

Dear R-friends, Could you please help me with a problem? I have a table with 4 columns: P,Z,S,T. Sometimes z is smaller than s, sometimes z is greater than t. For these smaller/greater z-values, I do need the associated p-value (see example below). I need the whole range of a and b, but I

[R] How to create matrix for if-else application with i?

Dear R-friends, Could you please help me with a problem? I have a table with 4 columns: P,Z,S,T. Sometimes z is smaller than s, sometimes z is greater than t. For these smaller/greater z-values, I do need the associated p-value (see example below). I need the whole range of a and b, but I