compare_spatrasters {tidyterra} | R Documentation |
Compare attributes of two SpatRaster
objects
Description
Two SpatRaster
objects are compatible (in terms of combining layers) if the
crs, extent and resolution are similar. In those cases you can combine the
objects simply as c(x, y)
.
This function compares those attributes informing of the results. See Solving issues section for minimal guidance.
Usage
compare_spatrasters(x, y, digits = 6)
Arguments
x , y |
|
digits |
Integer to set the precision for comparing the extent and the resolution. |
Value
A invisible logical TRUE/FALSE
indicating if the SpatRaster
objects are
compatible, plus an informative message flagging the issues found (if any).
terra equivalent
Solving issues
On non-equal crs, try
terra::project()
.On non-equal extent try
terra::resample()
.On non-equal resolution you can try
terra::resample()
,terra::aggregate()
orterra::disagg()
.
See Also
Other helpers:
is_grouped_spatvector()
,
is_regular_grid()
,
pull_crs()
Examples
library(terra)
x <- rast(matrix(1:90, ncol = 3), crs = "EPSG:3857")
# Nothing
compare_spatrasters(x, x)
# Different crs
y_nocrs <- x
crs(y_nocrs) <- NA
compare_spatrasters(x, y_nocrs)
# Different extent
compare_spatrasters(x, x[1:10, , drop = FALSE])
# Different resolution
y_newres <- x
res(y_newres) <- res(x) / 2
compare_spatrasters(x, y_newres)
# Everything
compare_spatrasters(x, project(x, "epsg:3035"))