mapi: make a partition index for a SpatialStreamNetwork object

In jayverhoef/SSNbd: Spatial Modeling for Big Data Sets on Stream Networks

Description

make a partition index for a SpatialStreamNetwork object so that it can be used with fast methods for big data

Usage

mapi(ssn.object, nIndx, partMeth = "comp", set.seed.no = 1001)

Arguments

ssn.object	a SpatialStreamNetwork object, usually imported with SSN package
nIndx	the number of indexes (number of groups for partitioning)
partMeth	method for subsampling. Options are 'rand' for random, 'comp' for compact blocks using kmeans on coordinates, and 'zimm' for compact blocks with 10 Default is 'zimm'.
set.seed.no	set the random number seed so results are repeatable.

Value

an object of class "SpatialStreamNetwork", which is the same as the input ssn.object, except the points data.frame within now has a new field named partIndx which indexes the groups for partitioning.

Author(s)

Jay Ver Hoef

jayverhoef/SSNbd documentation built on April 1, 2020, 8:06 a.m.