occ.desaggregation.RASTER: Remove duplicated points falling into the same raster cell

In francesco-carotenuto/EcoPast: Methods and Tools for Deep-Time Macroecology with Fossil Data

Remove duplicated points falling into the same raster cell

Description

The function removes duplicated points falling into the same raster cell.

Usage

occ.desaggregation.RASTER(df, colxy, rast, plot=TRUE)

Arguments

df	a matrix or data.frame containing the points coordinates.
colxy	a numeric vector indicating the IDs of the x-y columns.
rast	a RasterLayer object to be used as base raster map.
plot	a logical vector indicating if a plot must be displayed.

Value

A matrix including the reduced points

Author(s)

Mirko Di Febbraro

Examples

library(raster)
raster(system.file("exdata/prediction_ground.gri", package="EcoPast"))->prediction_ground
data(lgm)

data_mammuth<-subset(lgm, spec=="Mammuthus_primigenius")

coordinates(data_mammuth)<-~x+y
proj4string(data_mammuth)<-"+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"
data_mammuth<-spTransform(data_mammuth, proj4string(prediction_ground))
data_mammuth<-as.data.frame(data_mammuth)

data_mammuth_reduced<-occ.desaggregation.RASTER(df=data_mammuth, colxy=4:5,
rast=prediction_ground, plot=TRUE)

francesco-carotenuto/EcoPast documentation built on April 16, 2023, 5:48 p.m.