table_updateColumn: Update a column of metadata in a table

In MazamaLocationUtils: Manage Spatial Metadata for Known Locations

Update a column of metadata in a table

Description

Updates records in a location table. Records are identified by locationID and the data found in locationData is used to replace any existing value in the columnName column. locationID and locationData must be of the same length. Any NA values in locationID will be ignored.

If columnName is not a named column within locationTbl, a new column will be created.

Usage

table_updateColumn(
  locationTbl = NULL,
  columnName = NULL,
  locationID = NULL,
  locationData = NULL,
  verbose = TRUE
)

Arguments

locationTbl	Tibble of known locations.
columnName	Name of an existing/new column in locationTbl whose data will be updated/created.
locationID	Vector of locationID strings.
locationData	Vector of data to be inserted at records identified by locationID.
verbose	Logical controlling the generation of progress messages.

Value

Updated tibble of known locations.

See Also

table_addColumn

table_removeColumn

Examples

library(MazamaLocationUtils)

locationTbl <- get(data("wa_monitors_500"))
wa <- get(data("wa_airfire_meta"))

# We will merge some metadata from wa into locationTbl

# Record indices for wa
wa_indices <- seq(5,65,5)
wa_sub <- wa[wa_indices,]

locationID <- 
  table_getLocationID(
    locationTbl, 
    wa_sub$longitude, 
    wa_sub$latitude, 
    distanceThreshold = 500
  )
  
locationData <- wa_sub$AQSID

locationTbl <- 
  table_updateColumn(locationTbl, "AQSID", locationID, locationData)

# Look at the data we attempted to merge
wa$AQSID[wa_indices]

# And two columns from the updated locationTbl
locationTbl_indices <- table_getRecordIndex(locationTbl, locationID)
locationTbl[locationTbl_indices, c("city", "AQSID")]

MazamaLocationUtils documentation built on Sept. 11, 2024, 9:08 p.m.