Re: [R] Lattice nb/wlist help

2011-04-27 Thread Gary Nobles
hi I am still tryingto do this, I have been working on this for a year but i have remained stuck... I have points at regular intervals but within an irregular window I need to make a nb weights matrix, then nb2wlist conceptually a D8 neighbourhood something like this: 000 000 0011100

Re: [R] Lattice nb/wlist help

2011-04-27 Thread David Winsemius
On Apr 27, 2011, at 5:28 AM, Gary Nobles wrote: hi I am still tryingto do this, I have been working on this for a year but i have remained stuck... I have points at regular intervals but within an irregular window I need to make a nb weights matrix, then nb2wlist Not sure I understand

[R] Lattice nb/wlist help

2011-02-02 Thread Gary Nobles
Hi all, I have a grid of points at regular intervals (taken from a raster). I want to create a listw matrix which opperates like this 1 1 1 1 1 1 1 1 1 and also like this 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 and so on I want it to work with