R: Convert Horizon Boundary Topography to Line Type

hzTopographyCodeToLineType {aqp}

R Documentation

Convert Horizon Boundary Topography to Line Type

Description

This function will convert USDA-NCSS horizon boundary topography codes into line types, based on the Field Book for Describing and Sampling Soils, version 3.0.

Usage

hzTopographyCodeToLineType(
  x,
  codes = c("smooth", "wavy", "irregular", "broken"),
  lty = c(1, 2, 3, 4)
)

Arguments

`x`	vector of boundary topography codes to be converted
`codes`	character vector of topography terms ('smooth') or codes ('S'), case insensitive, see details
`lty`	line types

Details

Visualization of horizon boundary topography can be difficult, line type offers an additional visual cue. See hzTopographyCodeToOffset for an offset-based approach. Additional examples are available in the Visualization of Horizon Boundaries tutorial. Missing data in x (NA) or codes that are not defined in codes are returned as line type 1.

Either format (or mixture) are accepted, case insensitive:

terms: c('smooth', 'wavy', 'irregular', 'broken')
coded values: c('s', 'w', 'i', 'b')

Value

vector of line types with same length as x

Author(s)

D.E. Beaudette

References

Field Book for Describing and Sampling Soils, version 3.0