In michielvandijk/mapspamc: An R package to create crop distribution maps

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

run_mapspamc runs the selected model (min_entropy or max_score) in GAMS. If model_sel = 1, the model is run for each individual administrative unit at level 1. If model_sel = 0 the model is run only once for the total country. Selecting out = TRUE (default setting), the model log will be sent to the screen after the model run is finished. The log is a text file, which names starts with model_log_ and is saved in the processed_data/intermediate_output folder. Note that, depending on the size of the country and the selected resolution, the model might take a lot of time to run. If the model is very large, there is a risk the user's computer runs out of memory and an error message will be printed in the model log.

run_mapspamc(param)

mapspamc results are saved into one (solve_level = 0) or multiple (solve_level = 1) gdx files after run_mapspamc() is executed. combine_results() combines the file(s) into a single rds file that can be loaded into R for further processing. The file is saved in the processed_data/results folder.

combine_results(param)

Finally, the user can inspect the results using the view_results() function, which only works after combine_results() is run. This function produces a grid that compares the crop distribution maps (harvested or physical area) for a selected crop, using a different panel for each farming system. The maps are interactive and the user can zoom in for closer inspection and select different background maps. The plots are shown in the default browser, unless specified otherwise.