terra (version 1.8-5)

extractRange: Extract values for a range of layers from a SpatRaster

Description

Extract values from a SpatRaster for a set of locations and a range of layers. To extract values for a single or all layers, use extract

Usage

# S4 method for SpatRaster
extractRange(x, y, first, last, lyr_fun=NULL, 
		geom_fun=NULL, ID=FALSE, na.rm=TRUE, ...)

Value

numeric or data.frame

Arguments

x

SpatRaster

y

SpatVector (points, lines, or polygons). Alternatively, for points, a 2-column matrix or data.frame (x, y) or (lon, lat). Or a vector with cell numbers

first

layer name of number, indicating the first layer in the range of layers to be considered

last

layer name or number, indicating the last layer in the range to be considered

lyr_fun

function to summarize the extracted data across layers

geom_fun

function to summarize the extracted data for each line or polygon geometry. Ignored if y has point geometry

ID

logical. Should an ID column be added? If so, the first column returned has the IDs (record numbers) of y

na.rm

logical. Should missing values be ignored?

...

additional arguments passed to extract

See Also

extract

Examples

r <- rast(system.file("ex/logo.tif", package="terra"))   
xy <- data.frame(c(50,80), c(30, 60))
extract(r, xy)
extract(r, xy, layer=c("red", "green"))
extractRange(r, xy, first=1:2, last=3:2, lyr_fun=sum)