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openair (version 1.1-3)

Tools for the Analysis of Air Pollution Data

Description

Tools to analyse, interpret and understand air pollution data. Data are typically hourly time series and both monitoring data and dispersion model output can be analysed. Many functions can also be applied to other data, including meteorological and traffic data.

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Version

Install

install.packages('openair')

Monthly Downloads

4,751

Version

1.1-3

License

GPL (>= 2)

Maintainer

David Carslaw

Last Published

January 27th, 2015

Functions in openair (1.1-3)

Get information about airbase sites and instruments

Import pre-calculated airbase statistics

CERC Atmospheric Dispersion Modelling System (ADMS) data import function(s) for openair

Import pre-calculated HYSPLIT 96-hour back trajectories

Function to plot wind speed/direction frequencies and other statistics

Flexible scatter plots

Trajectory line plots with conditioning

Taylor Diagram for model evaluation with conditioning

Calculate common model evaluation statistics

Example data for openair

corrgram plot with conditioning

Kernel density plot for daily mean exceedance statistics

conditionalEval

Conditional quantile estimates with additional variables for model evaluation

Function to split data in different ways for conditioning

Scale key handling for openair

Generic data import for openair

Import data from the UK Automatic Urban and Rural Network (AURN)

Import hourly data from the European Environment Agency airbase database

Scottish Air Quality Network data import for openair

Import monitoring site meta data for the AURN, KCL and SAQN networks

Import data from King's College London networks

Tools for the analysis of air pollution data

K-means clustering of bivariate polar plots

Bivariate polarAnnulus plot

Function to plot percentiles by wind direction

Function to rapidly provide an overview of air quality data

Plot time series

Calculate clusters for back tracectories

Time series plot with categories shown as a stacked bar chart

Function to extract run lengths greater than a threshold

Calculate percentile values from a time series

Tests for trends using Theil-Sen estimates

Plot time series values in convential calendar format

AURN csv file data import for openair

Subset a data frame based on date

Linear relations between pollutants

Divide up a data frame by time

Calculate rollingMean values

Trajectory level plots with conditioning

Diurnal, day of the week and monthly variation

airbaseFindCode

Helper function to find EEA airbase site codes

conditionalQuantile

Conditional quantile estimates for model evaluation

Calculate summary statistics for air pollution data by year

Function to simplify and combine airbase data imports

openair colours

Estimate NO2/NOX emission ratios from monitoring data

Bivariate polar plot with smoothing

Automatic text formatting for openair

Calculate nonparametric smooth trends

Function to calculate time averages for data frames

Traditional wind rose plot and pollution rose variation