cdlsim

The goal of cdlsim is to simulate USDA CDL data to quantify the sensitivity of metrics calculated on it. The R package landscapemetrics is used to implement popular FRAGSTATS style metrics in R.

Installation

The stable release of cdlsim will be available from CRAN soon:

install.packages("cdlsim")

Until then, you can install the development version of cdlsim from GitHub with:

# install.packages("devtools")
devtools::install_github("burgerhaley97/cdlsim")

Example Usage

This is a basic example which shows how a simple landscape would behave in our simulation:

library(cdlsim)

Create a small raster

r <- rast(nrows = 20, ncols = 20) values(r) <- rep(1:3, length.out = ncell(r))

Simple transition matrix

trans_mat <- matrix(1/3, nrow = 3, ncol = 3) rownames(trans_mat) <- colnames(trans_mat) <- c(“1”, “2”, “3”)

Simulation example

simulate_raster_patch(r, trans_mat, iterations = 1)