gengrid: Polygonize a raster and compute zonal statistics at polygon...

In SSA-Statistical-Team-Projects/SAEplus: Package for Geospatial Analysis & Small Area Estimation Post-Diagnostics

Polygonize a raster and compute zonal statistics at polygon and full shape-file level

Description

Polygonize a raster and compute zonal statistics at polygon and full shape-file level

Usage

gengrid(
  dsn = "data-raw",
  layer = "gadm36_CMR_0",
  stats = "sum",
  featname = "population",
  raster_tif = "cmr_ppp_2020_UNadj_constrained.tif",
  grid_shp = T,
  grid_size = 1,
  crs = "+proj=longlat +datum=WGS84 +no_defs",
  drop_Zero = T
)

Arguments

dsn	stands for data source name (see sf::st_read documentation for more information)
layer	layer name (see sf::st_read documentation for more information), will also accept object of class "sf"
stats	zonal statistics to be estimated
featname	the feature that the zonal statistic is computed for
raster_tif	raster file with tif extension
grid_shp	if TRUE, a grid system will be created for the shapefile (shp), grid_size must be specified
grid_size	the diagonal length of the polygon in km
crs	the co-ordinate reference system to be used
drop_zero	if TRUE, gengrid will keep only zonal statistics that are different from zero

Value

list object aggregated zonal statistic, polygon data and summary statistics on polygon data

SSA-Statistical-Team-Projects/SAEplus documentation built on Aug. 24, 2022, 11:26 a.m.