Cell values and geometry attributes
Get the cell values of a SpatRaster or the attributes of a SpatVector
## S4 method for signature 'SpatRaster' values(x, mat=TRUE, dataframe=FALSE, row=1, nrows=nrow(x), col=1, ncols=ncol(x)) ## S4 method for signature 'SpatVector' values(x)
x |
SpatRaster or SpatVector |
mat |
logical. If |
dataframe |
logical. If |
row |
positive integer. Row number to start from, should be between 1 and nrow(x) |
nrows |
positive integer. How many rows? |
col |
positive integer. Column number to start from, should be between 1 and ncol(x) |
ncols |
positive integer. How many columns? Default is the number of columns left after the start column |
If x is a SpatRaster, and matrix=TRUE, a matrix is returned in which the values of each layer are represented by a column (with ncell(x) rows). The values per layer are in cell-order, that is, from top-left, to top-right and then down by row. Use as.matrix for an alternative matrix representation where the number of rows and columns matches that of x, if x has a single layer.
If matrix=FALSE, the values are returned as a vector. In cell-order by layer.
matrix or data.frame
f <- system.file("ex/elev.tif", package="terra")
r <- rast(f)
r
x <- values(r)
x[3650:3655, ]
r[3650:3655]
ff <- system.file("ex/lux.shp", package="terra")
v <- vect(ff)
y <- values(v)
head(y)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.