soilDB: processSDA_WKT – R documentation

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processSDA_WKT

Post-process WKT returned from SDA.

This is a helper function, commonly used with SDA_query to extract WKT (well-known text) representation of geometry to an sp-class object.

processSDA_WKT(d, g = "geom", p4s = "+proj=longlat +datum=WGS84")

`d`	`data.frame` returned by `SDA_query`, containing WKT representation of geometry
`g`	name of column in `d` containing WKT geometry
`p4s`	PROJ4 CRS definition, typically GCS WGS84

The SDA website can be found at https://sdmdataaccess.nrcs.usda.gov. See the SDA Tutorial for detailed examples.

A Spatial* object.

This function requires the httr, jsonlite, XML, and rgeos packages.

D.E. Beaudette

Soil Database Interface

v2.6.1

GPL (>= 3)

Authors

Dylan Beaudette [aut], Jay Skovlin [aut], Stephen Roecker [aut], Andrew Brown [aut, cre]

Initial release

2021-04-7