ExportGeogrid: Creates a georeferenced TIF from a geogrid variable

In NCAR/rwrfhydro: R tools for the WRF Hydro Model

Description

ExportGeogrid takes a NetCDF geogrid and converts the specified variable into a georeferenced TIF file.

Usage

ExportGeogrid(inFile, inVar, outFile, inCoordFile = NA, inLyr = NA,
  inLyrPos = 2, inProj4 = NA)

Arguments

inFile	A netcdf file containing the variable to be converted to a TIF.
inVar	The name of the variable to be converted, should exist in inFile.
outFile	The geoTiff filename to create.
inCoordFile	(OPTIONAL) The netcdf file containing the lat/lon coordinates if they are not included in the inFile. This is useful, for example, when creating a geotiff from an LDASOUT output file which does not contain lat/lon coordinates but matches the spatial coordinate system of the geogrid input file.
inLyr	(OPTIONAL, default=NA) The layer number to export if the variable has more than 2 dimensions, e.g., for soil or snow layer variables.
inLyrPos	(OPTIONAL, default=2) The position of the dimension to export if the variable has more than 2 dimensions, e.g., for soil or snow layer variables.
inProj4	(OPTIONAL, default=NA) If your data does not follow default WRF lambert conformal conic specifications, specify the proj4 string.

Details

ExportGeogrid takes a standard geogrid in NetCDF format and converts the specified variable to a georeferenced geoTiff for use in standard GIS tools.

See Also

Other geospatial: GetGeogridIndex, GetGeogridSpatialInfo, GetPoly, GetProj, GetRfc, GetTimeZone, PolyToRaster

Examples

## Export the HGT_M field from the geogrid file geo_em.d01_1km.nc
## to a geoTiff called geogrid_hgt.tif.

## Not run: 
ExportGeogrid("~/wrfHydroTestCases/Fourmile_Creek/DOMAIN/geo_em.d01_1km_nlcd11.nc",
             "HGT_M", "geogrid_hgt.tif")
ExportGeogrid("~/wrfHydroTestCases/Fourmile_Creek/RUN.RTTESTS/OUTPUT_ALLRT_DAILY/2013031500.LDASOUT_DOMAIN1",
             inVar="SOIL_M",
             outFile="20130315_soilm3.tif",
             inCoordFile="~/wrfHydroTestCases/Fourmile_Creek/DOMAIN/geo_em.d01_1km_nlcd11.nc",
             inLyr=3)

## End(Not run)

NCAR/rwrfhydro documentation built on Feb. 28, 2021, 12:47 p.m.