polygrid2grid: Coerce SpatialPolygridDataFrame into SpatialGridDataFrame and...

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

Description

Coerces SpatialPolygridDataFrame into SpatialGridDataFrame by copying the data to all associated grid cells. It may write the result to a geoTiff file.

Usage

polygrid2grid(obj, zcol = NA, returnSGDF = TRUE, geoTiffPath)

Arguments

obj	SpatialPolygridDataFrame-class
zcol	names or numbers of the data columns to be used
returnSGDF	if the generated SpatialGridDataFrame is to be returned
geoTiffPath	filename where to save the result as geoTiff (without suffix, '.tif' is added automatically); if missing, no geoTiff is generated

Details

The main reason to turn a SpatialPolygridDataFrame into a SpatialGridDataFrame is for plotting. It can make sense to generate a (multilayer) geoTiff instead of returning the transformed data into the workspace.

Value

A SpatialGridDataFrame with the same values assigned as in the SpatialPolygridDataFrame by copying the data to all associated grid cells. If returnSGDF = FALSE it returns TRUE.

Author(s)

Kristina B. Helle, [e-mail]

Examples

data(SPolygridDF)

# return SpatialGridDataFrame
SGridDF1 = polygrid2grid(SPolygridDF, zcol = "b")

# generate geoTiff 
polygrid2grid(SPolygridDF, returnSGDF = FALSE, 
              geoTiffPath = "SPolygridDF1")

# plot SpatialGridDataFrame
spplot(SGridDF1)

# view geoTiff with functions from 'raster' and delete it
SGridDF2 = brick("SPolygridDF1.tif")
plot(SGridDF2)
rm(SGridDF2)
file.remove("SPolygridDF1.tif")

KristinaHelle/sensors4plumes documentation built on May 7, 2019, 12:31 p.m.