write_geometry {ncdfgeom}

Write geometries and attributes to NetCDF-CF

Description

Creates a file with point, line or polygon instance data ready for the extended NetCDF-CF timeSeries featuretype format.

Will also add attributes if provided data has them.

Usage

write_geometry(
  nc_file,
  geom_data,
  instance_dim_name = NULL,
  variables = list()
)

Arguments

nc_file

character file path to the nc file to be created.

geom_data

sf data.frame with POINT, LINESTRING, MULTILINESTRING, POLYGON, or MULTIPOLYGON geometries. Note that three dimensional geometries are not supported.

instance_dim_name

character Not required if adding geometry to a NetCDF-CF Discrete Sampling Geometries timeSeries file. For a new file, will use package default – "instance" – if not supplied.

variables

character If a an existing netCDF files is provided, this list of variables that should be related to the geometries.

References

1. http://cfconventions.org/cf-conventions/cf-conventions.html

Examples

hucPolygons <- sf::read_sf(system.file('extdata','example_huc_eta.json', package = 'ncdfgeom'))

hucPolygons_nc <- ncdfgeom::write_geometry(nc_file=tempfile(), 
                                           geom_data = hucPolygons)
try({
  ncdump <- system(paste("ncdump -h", hucPolygons_nc), intern = TRUE)
  cat(ncdump ,sep = "\n")
}, silent = TRUE)