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The goal of mqor is to implement the methodologies “Ambient Air — Definition and use of modelling quality objectives for air quality assessment”. The package offers different routes to follow for users of different programming skill levels.

This project is funded under the European Standard on modelling quality objectives for assessment of ambient air (EC-ENV/2024/OP/0036, European Commission).

ℹ️ If you’re having issues, you may find the package documentation and FAQs helpful.

Installation

Please ensure that you have R installed. You can install R from https://cran.rstudio.com/. mqor has a minimum required R version of 4.1, which was released in 2021. This aligns with Posit’s R version support policy.

It is recommended to work with R in the RStudio IDE. This can be freely installed from https://posit.co/download/rstudio-desktop/.

If you are using Windows, you will also need to install Rtools to compile R packages locally. This should be in line with the version of R you are using. Find Rtools at https://cran.r-project.org/bin/windows/Rtools/.

An alternative to installing R & RStudio locally is the Posit Cloud platform.

You can install the development version of mqor using the remotes R package.

# install.packages("remotes")
remotes::install_git("https://code.europa.eu/jrcairqualitymodelling/mqor")

Alternatively, the pak package can be used.

# install.packages("pak")
pak::pak("gitlab::https://code.europa.eu/jrcairqualitymodelling/mqor")