.projNowhere

This is used in various places when converting <code>agentMatrix</code> objects to
<code>SpatialPoints</code> for use with functions, such as <code><a href="/link/raster%3A%3Abuffer()?package=NetLogoR&version=1.0.5" data-mini-rdoc="NetLogoR::raster::buffer()">raster::buffer()</a></code>.
None of these functions results in any real geospatial information being conserved,
other than distance and angle calculations. Buffering still occurs on the
unit-less World. This is therefore a way to allow <code>sp</code> and <code>raster</code>
functions to work as if a cell in the World was equal to 1 m. The resulting
answers will be converted back to units of "cells", not "m".
The <code>CRS()</code> operation is relatively time consuming.
Having a single object usable throughout is much faster.

internal

Build and run spatially explicit
agent-based models using only the R platform. 'NetLogoR' follows the same
framework as the 'NetLogo' software
(Wilensky (1999) <http://ccl.northwestern.edu/netlogo/>) and is a translation
in R of the structure and functions of 'NetLogo'.
'NetLogoR' provides new R classes to define model agents and functions to
implement spatially explicit agent-based models in the R environment.
This package allows benefiting of the fast and easy coding phase from the
highly developed 'NetLogo' framework, coupled with the versatility, power
and massive resources of the R software.
Examples of two models from the NetLogo software repository
(Ants <http://ccl.northwestern.edu/netlogo/models/Ants>) and
Wolf-Sheep-Predation
(<http://ccl.northwestern.edu/netlogo/models/WolfSheepPredation>),
and a third, Butterfly, from
Railsback and Grimm (2012) <https://www.railsback-grimm-abm-book.com/>, all
written using 'NetLogoR' are available.
The 'NetLogo' code of the original version of these
models is provided alongside.
A programming guide inspired from the 'NetLogo' Programming Guide
(<https://ccl.northwestern.edu/netlogo/docs/programming.html>) and a dictionary
of 'NetLogo' primitives (<https://ccl.northwestern.edu/netlogo/docs/dictionary.html>)
equivalences are also available.
NOTE: To increment 'time', these functions can use a for loop or can be
integrated with a discrete event simulator, such as 'SpaDES'
(<https://cran.r-project.org/package=SpaDES>).
The suggested package 'fastshp' can be installed with
'install.packages("fastshp", repos = ("<https://rforge.net>"), type = "source")'.

Eliot J B

NetLogoR

Build and Run Spatially Explicit Agent-Based Models

Sarah Bauduin

Eliot J B McIntire

Alex M Chubaty

His Majesty the King in Right of Canada, as represented by the Minister of Natural Resources Canada 

.projNowhere function

An object of class <code>character</code> of length 1.

Format

This is used in various places when converting <code>agentMatrix</code> objects to
<code>SpatialPoints</code> for use with functions, such as <code><a href='https://rdrr.io/pkg/terra/man/buffer.html'>raster::buffer()</a></code>.
None of these functions results in any real geospatial information being conserved,
other than distance and angle calculations. Buffering still occurs on the
unit-less World. This is therefore a way to allow <code>sp</code> and <code>raster</code>
functions to work as if a cell in the World was equal to 1 m. The resulting
answers will be converted back to units of "cells", not "m".
The <code>CRS()</code> operation is relatively time consuming.
Having a single object usable throughout is much faster.

.projNowhere: Internal CRS usage

Description

Usage

Arguments

Format