extractRange function

Extract values for a range of layers from a SpatRaster

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 methods

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

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

Returns

numeric or data.frame

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)