subsetSDF.SpatialIndexDataFrame: Subsetting objects of class SpatialIndexDataFrame

In sensors4plumes: Test and Optimise Sampling Designs Based on Plume Simulations

Description

Subsetting of objects of class SpatialIndexDataFrame: selects index and/or attribute(s), and returns an object of class SpatialIndexDataFrame.

Usage

             
subsetSDF.SpatialIndexDataFrame(x, locations, data = names(x@data), ..., grid)

Arguments

x	object of class SpatialIndexDataFrame
locations	integer vector: keep data where x@index has this value (multiplicity ignored, order taken into account)
data	integer vector or names of columns of the x@data to be kept (order and multiplicity ignored)
...	further arguments to be passed to other methods
grid	integer vector: indices of x@index, keep the corresponding data

Value

A SpatialIndexDataFrame; the subsetting can be done cumulatively, e.g. if grid and locations is given, only the index entries that fullfill both criteria are kept.

Author(s)

Kristina B. Helle, [e-mail]

Examples

data(SIndexDF)
# subset
SIndexDF1 = subsetSDF(SIndexDF, grid = which(SIndexDF@index == 1)) 
SIndexDF2 = subsetSDF(SIndexDF, locations = 1) # identical to x_1
SIndexDF3 = subsetSDF(SIndexDF, grid = c(2:4, 6:8, 10:12, 14:16, 18:20), data = "c")

sensors4plumes documentation built on May 1, 2019, 10:27 p.m.