etrsCells.default: The Contsructor of the EtrsCells object

In etsakl/DasyMapR: Geographical ETRS-LAEA Grid Based Dasymetric Mapping

Description

The Contsructor of the EtrsCells object

Usage

etrsCells.default(etrs.table.codes = "data.frame", cell.size = "numeric")

Arguments

etrs.table.codes	a data frame CELLCODE,EASTOFORIGIN,NORTHOFORIGIN
cell.size	numeric : one of the resolutions of the grid that is 0.5m, 1m, 2.5m, 5m, 10m, 25m, 50m, 100m, 250m, 500m, 1Km, 2.5Km, 5Km, 10Km, 25Km, 50Km, 100Km

Value

an EtrsCells object

Examples

bb <- bbox(cbind(c(4321000, 4323000), c(3210000,3212000)))
cell.size = 1000
# Calculate the limits of the grid
bb.outer.limits <-
 cbind((floor(bb[, 1] / cell.size)) * cell.size, (ceiling(bb[, 2] / cell.size)) * cell.size)
# Calculates eastings
eastings <-
 seq(from = bb.outer.limits[1, 1], to = bb.outer.limits[1, 2], by = cell.size)
# Calculates northings
northings <-
 seq(from = bb.outer.limits[2, 1], to = bb.outer.limits[2, 2], by = cell.size)
eastings.northings <- as.matrix(expand.grid(eastings, northings))
low.corner.cell.etrs.points<-etrsPoints(eastings.northings = eastings.northings,cell.size =1000)
df <-EtrsTableCodes(eastings.northings,1000)
sp.cells <- etrsCells(df,1000)
summary(sp.cells)

etsakl/DasyMapR documentation built on May 16, 2019, 9:07 a.m.