r.SDD {aspace} | R Documentation |
Demo Data: Standard Deviation Distance Output Object
Description
Results from the Standard Deviation Distance Calculator (calc_sdd) are stored in a list object. This object is required for the plot function (plot_sdd).
Usage
data(r.SDD)
Format
The list object contains the following results:
- id
- Identifier for the SDD estimation - it should be unique
- points
- a simple two-column data frame (or matrix) containing x,y coordinates for a series of point locations.
- SDD
- SDD value, radius of the SDD
- calccentre
- Boolean: TRUE if mean centre is computed
- weighted
- Boolean: TRUE if the weighted mean centre is to be used instead
- weights
- Weights applied to point observations
- CENTRE.x
- X-coordinate of the centre
- CENTRE.y
- Y-coordinate of the centre
- central.x
- X-coordinate of central feature
- central.y
- Y-coordinate of central feature
- median.x
- X-coordinate of median centre
- median.y
- Y-coordinate of median centre
- CMD.x
- X-coordinate of centre of minimum distance
- CMD.y
- Y-coordinate of centre of minimum distance
- SDD.area
- Area of the SDD circle
Details
The coordinates of the points must have the same units and projection as the specified center.
Source
This demonstration data has been manufactured for illustrative purposes only.
Examples
data(r.SDD)
str(r.SDD)
[Package
aspace version 2.2
Index]