get_soil_data: Executes the full soil extraction process

In one-acre-fund/soilgrids: Manipulates soil grids data for easier 1AF use

Description

Executes the full soil extraction process

Usage

get_soil_data(df, lat_col = NULL, lon_col = NULL, country_iso,
  soil_layers = c("ph", "carbon", "soil_texture", "sand", "silt", "clay",
  "CEC", "p", "n"), raw_data_directory, country_polygon_directory)

Arguments

df	set of GPS points for which the user wants an export
lat_col	the latitude column in the data
lon_col	the longitude column in the data
country_iso	The country in which these points are located to trim down the data.
soil_layers	The soil variables the user wants returned in the dataframe for those soil points. The soil layers need to be one of the following: c(ph, carbon, soil_texture, sand, silt, clay, CEC, nitrogen) which are soil ph, carbon, soil texture, sand content, silt content, clay content, CEC, and soil nitrogen
raw_data_directory	The location where the data are located to know where to get the raw tif. This defaults to the current working directory.
country_polygon_directory	The file directory with the country polygon files. These are available for download with the get_country_polygon() function

Value

The original spdf data frame along with the extracted soil layers.

Note

This function assumes the data remain named what they are when they're down loaded from the soil grids website. The units for the soil parameters are available on the repo website, https://github.com/one-acre-fund/soilgrids, as well as listed out here: pH - standard pH scale. Carbon (SOC) - g/kg. Nitrogen - mg/kg. Phosphorous - mg/kg. CEC - cmolc/kg. sand, silt, clay - country_iso = c("KEN", "RWA", "BDI", "TZA", "UGA", "ZMB", "MWI", "ETH", "IND", "NGA")

Examples

## Not run: get_soil_data(spdf = gps.data,
country.iso = "KEN", raw_data_directory,
country_polygon_directory)
## End(Not run)

one-acre-fund/soilgrids documentation built on May 16, 2019, 5:02 a.m.