rangeDist_grass

<code>list</code> object with range and points

spdata

Empty raster extent or path to geotif representing the potential modelling domain with resolution, projection, etc.

domain

Distance threshold (in km) from expert range to set species <code>domain</code>.

domainkm

<code>logical</code> indicating whether to mask the distance to values <= <code="">domainkm.</=>

mask

<code>logical</code> indicating whether to print status messages.

verbose

<code>logical</code> indicating whether to delete all temporary GRASS files (the default) or keep them.  By default these files are in the current <code>tempdir()</code> and will be deleted when quitting R.

clean

Path to GRASS Binaries as required by <code><a rd-options="rgrass7" href="/link/initGRASS?package=bossMaps&version=0.1.0&to=rgrass7" data-mini-rdoc="rgrass7::initGRASS">initGRASS</a></code>

gisBase

filename for output file exported from GRASS.

file


Calculates distance to range boundary and returns a raster object.  Alternatively, one could use <code>raster::distance()</code> but it is very slow with large rasters.  This function uses GRASS (and requires grass to be available), but is much faster.


Contains functions to convert binary (presence-absence) expert species range maps (like those found in a field guide) into continuous surfaces based on distance to range edge.  These maps can then be used in species distribution models such as Maximum Entropy (Phillips 2008 <DOI:10.1111/j.0906-7590.2008.5203.x>) using additional information (such as point occurrence data) to refine the expert map.

Adam M. Wilson adamw@buffalo.edu

bossMaps

Convert Binary Species Range Maps into Continuous Surfaces Based
on Distance to Range Edge

rangeDist_grass function

<code>logical</code> indicating whether to mask the distance to values <= <code>domainkm</code>.

Path to GRASS Binaries as required by <code><a rd-options='rgrass7' href='initGRASS'>initGRASS</a></code>

rangeDist_grass: Use GRASS to calcuate distance to range edge

Description

Usage

Arguments