create_statistic_raster: Summarize the values of multiple layers into one layer. The...

In KeesVanImmerzeel/idf: Extending the 'raster' package with reading and writing idf rasters

Summarize the values of multiple layers into one layer. The name of the resulting raster is based on the colnames of the keys data.frame (input) and the values in the first row of this data.frame.

Description

Summarize the values of multiple layers into one layer. The name of the resulting raster is based on the colnames of the keys data.frame (input) and the values in the first row of this data.frame.

Usage

create_statistic_raster(
  x,
  EPSG = "EPSG:28992",
  e = NULL,
  funstr = NULL,
  statistic = "mean",
  keys
)

Arguments

x	filename (character)
EPSG	coordinate reference system like "EPSG:4326" (character)
e	Terra extent object
funstr	Optional function to modify raster values. Denote the raster with 'x' (or character between square brackets) (character)
statistic	Statistic to apply to selected rasters: mean, min, max, sd, median (character)
keys	a one row data.frame (or tibble) with no column, consistently with dplyr::group_keys() (tibble)

Value

terra::SpatRaster

Examples

statistic <- "max"
keys <- data.frame(day=1)
f1 <- system.file("extdata", "HEAD_20080401_l1.idf", package="idf")
f2 <- system.file("extdata", "HEAD_20080501_l1.idf", package="idf")
x <- c(f1, f2)
create_statistic_raster(x, statistic=statistic, keys=keys)

KeesVanImmerzeel/idf documentation built on Jan. 13, 2025, 3:23 a.m.