covariates

Subset of data used in Murphy et al., (2010)

Implementation of spatial graph-theoretic genetic gravity models.
The model framework is applicable for other types of spatial flow questions.
Includes functions for constructing spatial graphs, sampling and summarizing
associated raster variables and building unconstrained and singly constrained
gravity models.

Jeffrey S Evans

GeNetIt

Spatial Graph-Theoretic Genetic Gravity Modelling

Jeffrey S. Evans

Melanie Murphy

covariates function

A 30m LZW compressed tiff:<dl>
<dt>rows</dt>
<dd>426</dd><dt>columns</dt>
<dd>358</dd><dt>resoultion</dt>
<dd>30 meter</dd><dt>projection</dt>
<dd>"+proj=utm +zone=11 +datum=NAD83 +units=m +no_defs +ellps=GRS80 +towgs84=0,0,0"</dd><dt>cti</dt>
<dd>Compound Topographic Index ("wetness")</dd><dt>err27</dt>
<dd>Elevation Relief Ratio</dd><dt>ffp</dt>
<dd>Frost Free Period</dd><dt>gsp</dt>
<dd>Growing Season Precipitation</dd><dt>hil</dt>
<dd>Heat Load Index</dd><dt>nlcd</dt>
<dd>USGS Landcover</dd>
</dl>

Format

Subset of raster data for Columbia spotted frog (Rana luteiventris) — covariates

A 30m LZW compressed tiff:<dl>
<dt>rows</dt>
<dd>426</dd>

<dt>columns</dt>
<dd>358</dd>

<dt>resoultion</dt>
<dd>30 meter</dd>

<dt>projection</dt>
<dd>"+proj=utm +zone=11 +datum=NAD83 +units=m +no_defs +ellps=GRS80 +towgs84=0,0,0"</dd>

<dt>cti</dt>
<dd>Compound Topographic Index ("wetness")</dd>

<dt>err27</dt>
<dd>Elevation Relief Ratio</dd>

<dt>ffp</dt>
<dd>Frost Free Period</dd>

<dt>gsp</dt>
<dd>Growing Season Precipitation</dd>

<dt>hil</dt>
<dd>Heat Load Index</dd>

<dt>nlcd</dt>
<dd>USGS Landcover</dd>


</dl>

covariates: Subset of raster data for Columbia spotted frog (Rana luteiventris)

Description

Arguments

Format

References