dimitri-justeau/intra: v0.1

Beta release for article submission "Refining intra-patch connectivity measures in landscape fragmentation and connectivity indices"

Dimitri Justeau-Allaire¹, Thomas Ibanez¹, Ghislain Vieilledent¹'², Xavier Lorca³, Philippe Birnbaum¹'².

1. AMAP, Univ Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France
2. CIRAD, UMR AMAP, F‐34398 Montpellier, France
3. Centre de Génie Industriel, IMT Mines Albi, Albi, France

intra

The intra R package allows to compute patch complexity metrics from a raster file. Specifically, it computes the shape index (SHAPE), the fractal dimension (FRAC), and the mean detour index (MDI).

The main functions are:

extract_intra_metrics <- function(raster_path, raster_value, neighborhoodExtractCC = 4, neighborhoodExploreCC = 4)

Which compute these indices and return them as a dataframe, and:

export_shapefile <- function(raster_path, raster_value, shapefile_path, neighborhoodExtractCC = 4, neighborhoodExploreCC = 4, computeIndices=TRUE)

Which does the same but export the result as a shapefile, with the metrics as patch attributes.

This package relies on Rcpp, and needs GDAL/OGR C++ dev libraries.

This is an experimental package, developed to design new intra-patch connectivity indices. We would like to suggest their integration in a package such as landscapemetrics in the future, and thus do not aim to publish it to CRAN.