M3 (version 0.4)

Reading M3 Files

Description

Provides functions to read in and manipulate air quality model output from Models3-formatted files. This format is used by the Community Multiscale Air Quality (CMAQ) model.

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Version

Install

install.packages('M3')

Monthly Downloads

161

Version

0.4

License

Unlimited

Maintainer

Jenise Swall

Last Published

June 14th, 2024

Functions in M3 (0.4)

get.matrix.all.grid.cell.ctrs

Obtain a matrix giving the locations of the grid cell centers

get.proj.info.M3

Obtain information about the projection used in the Models3 file

project.M3.1.to.M3.2

Project coordinates based on projection in the first file to the projection given in the second

project.lonlat.to.M3

Project coordinates from longitude/latitude to model units.

var.subset

Subset the array resulting from a call to get.M3.var.

project.M3.to.lonlat

Project coordinates from model units to longitude/latitude

decipher.M3.time

Decipher Models3 time format (HHMMSS) into hours, minutes, and seconds.

get.map.lines.M3.proj

Get map lines in the model projection units

M3-package

Functions to read in and manipulate air quality model output from files in Models3 format

get.canusamex.bds

Obtain map boundaries for Canada, USA, and Mexico

get.M3.var

Read in variable values from Models3-formatted files

get.grid.info.M3

Get information about the grid used by the air quality model

combine.date.and.time

Combine date and time to obtain date-time in POSIX format

decipher.M3.date

Decipher Models3 date format (YYYYDDD) into R's Date class.

get.coord.for.dimension

Get the grid coordinates for the grid rows or columns.

get.datetime.seq

Read in a sequence of date-time steps from a Models3-formatted file.