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4 results for “from:Hamid Ghorbani”

test of CSR in 3D
Hamid Ghorbani · May 20, 2011 · r-sig-geo

Dear list, let L be the L function for a point pattern in 3D. using spatstat I need a plot of \hat{L(r)} - r vs. r along with the corresponding envelopes for a simulated pattern. The K function have...

calculating the maximum absolute difference between the empirical and theoritical Ripley's K-function
Hamid Ghorbani · Sep 14, 2010 · r-sig-geo

Dear researchers, In spatstat and for calculating the maximum absolute difference between the empirical Ripley's K-function (\hat(K), isotropic edge correction) and the theoretical K-function for a simulated Poisson process in a fixed window (suppose 3D case...

(no subject)
Hamid Ghorbani · Aug 29, 2010 · r-sig-geo

Dear researcher, Doing CSR test (based on Ripley K-function) for an observed homogeneous point process in a Window W with intensity \lambda(=n/a) , we accept the null hypothesis of CSR if sup|\sqrt(\hat{K(t)}/\pi -t...

running Apply takes long time
Hamid Ghorbani · Jun 30, 2019 · r-help

Dear users, Below I? have a? matrix, called *mysim.obs*?? (548 row and (1+nsim) columns, which its first column is my observation and the next? columns comprises simulation from the? fitted? model to first column). I want to evaluate...

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