A grid with 100 cells, each \(1^0\) by \(1^0\) in size roughly located on
central India. Each cell is assigned a hypothetical assemblage of varying
species richness from a hypothetical regional pool of 20 species.
The attribute table of the shape file has one uniqe id field observed species
richness of each cell and one expanatory variable. Observed species richness
is generated by assigning a randomly selected number of species among the 20
species in the regional pool.<ul>
<li>ID a unique id field</li>
<li>obs_rich observed species richness</li>
<li>trend a variable with spatial trend obtained using a linear function
 of coordinates</li>
</ul>

Generates expected values of species richness, with continuous or
scattered ranges, for data across one or two dimensions.

Aniruddha Marathe

rangemodelR

Mid-Domain Effect and Species Richness

shp function

an ESRI shapefile imported with <code><a rd-options="maptools" href="/link/readShapeSpatial?package=rangemodelR&version=1.0.4&to=maptools" data-mini-rdoc="maptools::readShapeSpatial">readShapeSpatial</a></code> with
 four columns in attribute table

Format

Polygon Grid Roughly Located on Central India — shp

an ESRI shapefile imported with <code><a rd-options='maptools' href='readShapeSpatial'>readShapeSpatial</a></code> with
 four columns in attribute table

shp: Polygon Grid Roughly Located on Central India

Description

Arguments

Format