Merge several emissions files returning data-frames or 'sf' of lines

emis_merge reads rds files and returns a data-frame or an object of 'spatial feature' of streets, merging several files.

emis_merge(
  pol = "CO",
  what = "STREETS.rds",
  streets = T,
  net,
  FN = "sum",
  ignore,
  path = "emi",
  crs,
  under = "after",
  as_list = FALSE,
  k = 1,
  verbose = TRUE
)

Arguments

pol: Character. Pollutant.
what: Character. Word to search the emissions names, "STREETS", "DF" or whatever name. It is important to include the extension .'rds'. For instance, If you have several files "XX_CO_STREETS.rds", what should be "STREETS.rds"
streets: Logical. If true, emis_merge will read the street emissions created with emis_post by "streets_wide", returning an object with class 'sf'. If false, it will read the emissions data-frame and rbind them.
net: 'Spatial feature' or 'SpatialLinesDataFrame' with the streets. It is expected #' that the number of rows is equal to the number of rows of street emissions. If #' not, the function will stop.
FN: Character indicating the function. Default is "sum"
ignore: Character; Which pollutants or other charavter would you like to remove?
path: Character. Path where emissions are located
crs: coordinate reference system in numeric format from http://spatialreference.org/ to transform/project spatial data using sf::st_transform
under: "Character"; "after" when you stored your pollutant x as 'X_' "before" when '_X' and "none" for merging directly the files.
as_list: "Logical"; for returning the results as list or not.
k: factor
verbose: Logical to display more information or not. Default is TRUE

Value

'Spatial feature' of lines or a dataframe of emissions

Examples

if (FALSE) { # \dontrun{
# Do not run

} # }