Obtain map boundaries for Canada, USA, and Mexico
Obtain information about the projection used in the Models3 file
Decipher Models3 date format (YYYYDDD) into R's Date class.
Read in variable values from Models3-formatted files
Project coordinates from model units to longitude/latitude
Get information about the grid used by the air quality model
Subset the array resulting from a call to get.M3.var.
Read in a sequence of date-time steps from a
Models3-formatted file.
Get the grid coordinates for the grid rows or columns.
Functions to read in and manipulate air quality model output from
files in Models3 format
Project coordinates based on projection in the first file to
the projection given in the second
Project coordinates from longitude/latitude to model units.
Combine date and time to obtain date-time in POSIX format
get.matrix.all.grid.cell.ctrs
Obtain a matrix giving the locations of the grid cell centers
Get map lines in the model projection units
Decipher Models3 time format (HHMMSS) into hours, minutes,
and seconds.