Re: [R-sig-Geo] Isotropic edge correction unbiasedness

2016-07-28 Thread Nick Eubank
Hi Adrian, One followup I can't find answered in the book -- is there an analogue to the isotropic edge correction in kest.fft? Or does it only do border? Thanks! Nick On Wed, Jul 27, 2016 at 10:58 AM Nick Eubank wrote: > Great, thanks so much for taking the time to answer this Adrian! And fo

Re: [R-sig-Geo] Isotropic edge correction unbiasedness

2016-07-27 Thread Nick Eubank
Great, thanks so much for taking the time to answer this Adrian! And for the book link! On Wed, Jul 27, 2016 at 3:25 AM Adrian Baddeley < adrian.badde...@curtin.edu.au> wrote: > Nick Eubank writes: > > > > Using `kest` to estimate a ripley's K for a country. > > This is a question about the 'spat

[R-sig-Geo] Isotropic edge correction unbiasedness

2016-07-27 Thread Adrian Baddeley
Nick Eubank writes: > Using `kest` to estimate a ripley's K for a country. This is a question about the 'spatstat' package. The function name is 'Kest'. > The authors of the package suggest isotropic is best when computationally > tractable for > irregular shapes, but I noticed in Ripley (1988

[R-sig-Geo] Isotropic edge correction unbiasedness

2016-07-26 Thread Nick Eubank
Hi All, Using `kest` to estimate a ripley's K for a country. The authors of the package suggest isotropic is best when computationally tractable for irregular shapes, but I noticed in Ripley (1988) that this correction is only "unbiased provided E is convex", where E is the boundaries of study.