getPolygonID

Extracts the the vector of unique polygon identifiers from
<code>SFDF</code>.
This function is useful when writing code to aggregate data by polygon and
calculate per-polygon statistics. Each unique simple features data frame will
have a different set of data columns but each is guaranteed to have a column
named <code>polygonID</code> that uniquely identifies each polygon.
This allows us to write code that aggregates by polygon without having to
know whether the polygons represent, countries, timezones or HUCs, etc.

locator

A suite of conversion functions to create internally standardized
spatial polygons data frames. Utility functions use these data sets to
return values such as country, state, time zone, watershed, etc. associated
with a set of longitude/latitude pairs. (They also make cool maps.)

Jonathan Callahan

MazamaSpatialUtils

Spatial Data Download and Utility Functions

Rachel Carroll

Eli Grosman

Roger Andre

Tom Bergamaschi

Tina Chen

Ruby Fore

Will Leahy

Helen Miller

Henry Nguyen

Robin Winstanley

Alice Yang

getPolygonID function

<dl><dt>SFDF</dt>
<dd>Spatial polygons dataset of interest.</dd></dl>

Arguments

Get polygonID from SFDF of interest — getPolygonID

<dl>

<dt>SFDF</dt>
<dd>Spatial polygons dataset of interest.</dd>

</dl>

Get polygonID from SFDF of interest

getPolygonID: Get polygonID from SFDF of interest

Description

Usage

Value

Arguments