Unbiased estimators of overall and per-class thematic map accuracy and area for diverse sampling designs (simple, systematic and stratified). Implemented estimators are described here:
Olofsson, P.; Foody, G. M.; Herold, M.; Stehman, S. V.; Woodcock, C. E.; Wulder, M. A. (2014). Good practices for estimating area and assessing accuracy of land change. Remote Sens. Environ., 148, 42–57, doi:10.1016/j.rse.2014.02.015.
Olofsson, P.; Foody, G. M.; Stehman, S. V.; Woodcock, C. E. (2013). Making better use of accuracy data in land change studies: Estimating accuracy and area and quantifying uncertainty using stratified estimation. Remote Sens. Environ., 129, 122–131, doi:10.1016/j.rse.2012.10.031.
Stehman, S. V. (2014). Estimating area and map accuracy for stratified random sampling when the strata are different from the map classes. Int. J. Remote Sens., 35, 4923–4939, doi:10.1080/01431161.2014.930207.
devtools::install_github(“hagc/mapaccuracy”)