how do we sample in spatial statistics?
zhijie zhang wrote:
Dear friends, Sorry for sending an empty email because of mismanipulation. Do we also use sample() function to do the spatial sampling? I look for the sample() and think it's one-dimensional sampling. In spatial statistics, do we need two-dimentional sampling or some other sampling techniques? Which functions could be used in spatial samping in R? thanks very much!
spsample in package has a few simple spatial sampling techniques (basically those described in Ripley, 1981: random, regular, stratified, nonaligned systematic) on lines, polygons and grids. More advanced sampling techniques are found in package spatstat. -- Edzer