makeUsedAvail: Make a Used-Aavailable Data Frame

In ResourceSelection: Resource Selection (Probability) Functions for Use-Availability Data

Description

Make a used-available data frame from a presence-absence type data.

Usage

makeUsedAvail(x, ...)

## Default S3 method:
makeUsedAvail(x, y, ...)

## S3 method for class 'formula'
makeUsedAvail(formula, data = parent.frame(), ...)

Arguments

x	a matrix or data frame.
y	a vector with 0/1 entries, 1s are taken as used observations.
formula	two sided model formula of the form y ~ x.
data	data.
...	other arguments.

Value

The function returns a data frame, where used and available portions of the input data are bound on top of each other, the first column refers to y, where used (1) and available (0) locations are indicated different from the input values. All locations in the input data are treated as available (0), while only nonzero observations in y are treated as used (1).

Author(s)

Peter Solymos

Examples

(x <- data.frame(species=rep(1:0,each=4), var1=1:8, var2=11:18))
makeUsedAvail(species ~ var1 + var2, x)

Example output

ResourceSelection 0.3-2 	 2017-02-28
  species var1 var2
1       1    1   11
2       1    2   12
3       1    3   13
4       1    4   14
5       0    5   15
6       0    6   16
7       0    7   17
8       0    8   18
   species var1 var2
1        1    1   11
2        1    2   12
3        1    3   13
4        1    4   14
5        0    1   11
6        0    2   12
7        0    3   13
8        0    4   14
9        0    5   15
10       0    6   16
11       0    7   17
12       0    8   18

ResourceSelection documentation built on May 2, 2019, 6:29 p.m.