join_by_id: Join variables with coordinates to the destination file by...

In mengluchu/APMtools: statistical air pollution mapping tools

Description

Join variables with coordinates to the destination file by ID, so it requires an ID file with coordinates

Usage

join_by_id(
  IDfile,
  coordinatefile,
  file2merge = merged,
  varname = "value",
  newname
)

Arguments

IDfile	sp or dataframe with coordinate and ID that Oliver uses
coordinatefile	sp or datafrme with coordinate and variables values (air quality measurements) but no ID
file2merge	dataframe to merge to, i.e. file with all the variables
varname	the name of the variable in the coordinatefile to merge

Value

a dataframe

Examples

join_by_id(IDfile= testoaq, coordinatefile=meanoaq, file2merge = merged, varname='day_mean')
require(sf)
require(maptools)
require(sp)
meanoaq = read.csv('q_day.csv') #locations and values
testoaq = read.csv('openaqmorethan1000_ch_locations.csv') # ID with locaitons
join_by_id(IDfile= testoaq, coordinatefile=d, file2merge = merged, varname='value', newname = 'day_value')

mengluchu/APMtools documentation built on Jan. 27, 2022, 2:41 a.m.