jaccard {bamm} | R Documentation |
jaccard: Estimates the Jaccard index for comparing two binary maps
Description
Estimates the Jaccard index for comparing two binary maps
Usage
jaccard(m1, m2)
Arguments
m1 |
A binary raster A or an object of class setA returned by
the function |
m2 |
A binary raster A or an object of class setA returned by
the function |
Details
The Jaccard index is computed as follows
J(A,B)={{|A\cap B|}\over{|A\cup B|}}={{|A\cap B|}\over{|A|+|B|-|A\cap B|}}.
Value
Returns a data.frame with three values: 1) jaccard (Jaccard index),
2) percentage_m1 (the percentage of m1 that the
intersection |A \cap B|
represents), and 3) percentage_m2
Author(s)
Luis Osorio-Olvera & Jorge SoberĂ³n
Examples
m1_path <- system.file("extdata/conejos/Lepus_othus_cont.tif",
package = "bamm")
m2_path <- system.file("extdata/conejos/Brachylagus_idahoensis_cont.tif",
package = "bamm")
m1 <- raster::raster(m1_path) > 0.01
m2 <- raster::raster(m2_path) >0.01
jcc <- bamm::jaccard(m1,m2)
print(jcc)
[Package bamm version 0.5.0 Index]