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Translation pipeline using GRASS

statsGRASS.Rd

Translation pipeline using GRASS

Usage

statsGRASS(
  grass,
  addon_base,
  areas,
  tree_cover,
  tree_loss,
  tree_co2,
  idcol,
  thresholdClump,
  thresholdCover,
  years,
  outdir = NULL,
  saveRaster,
  hideoutput = FALSE,
  .tmpdir = tempdir()
)

Arguments

grass

A character vector pointing to the directory where GRASS binaries are installed.

addon_base

A character vector pointing to the directory where GRASS add-on binaries are installed. In order to work, the (r.area)[https://grass.osgeo.org/grass78/manuals/addons/r.area.html] add-on needs to be installed. See (here)[https://grass.osgeo.org/download/addons/] to learn how to install GRASS add-ons.

areas

An sf object with polygons representing areas of interest for which to preprocess individual rasters.

tree_cover

A character vector pointing to the raster file representing tree cover in percentage for the entire study domain.

tree_loss

A character vector pointing to the raster file representing the year of tree cover loss for the entire study domain.

tree_co2

A character vector pointing to the raster file representing co2 emissions from tree cover loss for the entire study domain.

idcol

A character vector identifying the a column name which uniquely identifies the polygons in the areas object. Values will be used to name the output rasters.

thresholdClump

A numeric value identifying the number of pixels of smallest clumps. All raster cell clumps smaller than the specified threshold will be removed.

thresholdCover

A numeric value identifying the smallest cover percentage to be considered as forest. All raster cell values below this threshold will be removed

years

A numeric vector specifying for which years to calculate an annual forest mask starting from 2001. (e.g. years = c(2001:2010)).

outdir

A character pointing to a directory where the output files will be written to. If files with the same name as specified by the values in idcol are present, their calculation is skipped without warning.

saveRaster

Logical indicating if raster are to be saved to disk

hideoutput

Logical indicating if grass output should not be printed in console.

.tmpdir

A character string pointing to a directory where intermediate GRASS files will be written to. Defaults to the output of tempdir(). Note, that you should have write access to the directory, otherwise the the function will fail.

Author

Darius Görgen (MapTailor Geospatial Consulting GbR) info@maptailor.net
Maintainer: MAPME-Initiative contact@mapme-initiative.org
Contact Person: Dr. Johannes Schielein
Copyright: MAPME-Initiative
License: GPL-3