Get map unit parent material group information from Soil Data Access

Usage

get_SDA_pmgroupname(
  areasymbols = NULL,
  mukeys = NULL,
  WHERE = NULL,
  method = "DOMINANT COMPONENT",
  simplify = TRUE,
  include_minors = TRUE,
  miscellaneous_areas = FALSE,
  query_string = FALSE,
  dsn = NULL
)

Arguments

areasymbols: character. Vector of soil survey area symbols
mukeys: integer. Vector of map unit keys
WHERE: character. SQL WHERE clause specified in terms of fields in legend, mapunit, component, or copmgrp tables, used in lieu of mukeys or areasymbols
method: character. One of: "Dominant Component", "Dominant Condition", "None"
simplify: logical. Group into generalized parent material groups? Default TRUE
include_minors: logical. Include minor components? Default: TRUE.
miscellaneous_areas: logical. Include miscellaneous areas (non-soil components) in results? Default: FALSE.
query_string: Default: FALSE; if TRUE return a character string containing query that would be sent to SDA via SDA_query
dsn: Path to local SQLite database or a DBIConnection object. If NULL (default) use Soil Data Access API via SDA_query().

Value

a data.frame

Details

Default method is "Dominant Component" to get the dominant component (highest percentage). Use "Dominant Condition" or dominant parent material condition (similar conditions aggregated across components). Use "None" for no aggregation (one record per component).

Author

Jason Nemecek, Chad Ferguson, Andrew Brown