gNATSGO / gSSURGO Map Unit Key Web Coverage Service (WCS)
Download chunks of the gNATSGO or gSSURGO map unit key grid via bounding-box from the SoilWeb WCS.
mukey.wcs(aoi, db = c("gnatsgo", "gssurgo"), res = 30, quiet = FALSE)aoi |
area of interest (AOI) defined using either a |
db |
name of the gridded map unit key grid to access, should be either 'gnatsgo' or 'gssurgo' |
res |
grid resolution, units of meters. The native resolution of gNATSGO and gSSURGO (this WCS) is 30m. |
quiet |
logical, passed to |
aoi should be specified as one of: Spatial*, RasterLayer, sf, sfc, bbox object, or a list containing:
aoibounding-box specified as (xmin, ymin, xmax, ymax) e.g. c(-114.16, 47.65, -114.08, 47.68)
crscoordinate reference system of BBOX, e.g. '+init=epsg:4326'
The WCS query is parameterized using raster::extent derived from the above AOI specification, after conversion to the native CRS (EPSG:6350) of the gNATSGO / gSSURGO grid.
Databases available from this WCS can be queried using WCS_details(wcs = 'mukey').
raster object containing indexed map unit keys and associated raster attribute table
The gNATSGO grid includes raster soil survey map unit keys which are not in SDA.
D.E. Beaudette and A.G. Brown
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