AMPL API is an interface that allows developers to access the features of the AMPL interpreter from within a programming language. All model generation and solver interaction is handled directly by AMPL, which leads to great stability and speed; the library just acts as an intermediary, and the added overhead (in terms of memory and CPU usage) depends mostly on how much data is read back from AMPL, the size of the model as such is irrelevant. Functions for directly assigning data to AMPL parameters and sets are provided, which can be used instead of the normal AMPL data reading procedures. AMPL API has been written with usability in mind, and it is easy to access its functionalities from C++, Java, C#, MATLAB, Python, and R.
The AMPL API can function as an add-on to any existing AMPL installation. If you do not yet have an AMPL installation on the computer where you will be working with the API. Use our Community Edition to download a working version that can be installed quickly.
In order to install the latest version of the R API you just need to run:
> install.packages("Rcpp", type="source")
> install.packages("https://ampl.com/dl/API/rAMPL.tar.gz", repos=NULL)
Note: this package requires R development tools on Windows and macOS, which can be installed as follows:
- Windows: https://cran.r-project.org/bin/windows/Rtools/
- macOS: https://cran.r-project.org/bin/macosx/tools/
- On Linux, this package requires a C++ compiler such as g++.
Alternatively, you can download, build, and install the package locally:
$ git clone [email protected]:ampl/rAMPL.git
$ cd rAMPL
$ python updatelib.py
$ cd ..
$ R CMD build rAMPL
$ R CMD INSTALL rAMPL_<version>.tar.gz
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