att.delete.nc: Delete a NetCDF Attribute

In RNetCDF: Interface to 'NetCDF' Datasets

Delete a NetCDF Attribute

Description

Delete a NetCDF attribute.

Usage

att.delete.nc(ncfile, variable, attribute)

Arguments

ncfile	Object of class NetCDF which points to the NetCDF dataset (as returned from open.nc).
variable	ID or name of the attribute's variable, or "NC_GLOBAL" for a global attribute.
attribute	The name or ID of the attribute to be deleted.

Details

This function deletes a NetCDF attribute from a NetCDF dataset open for writing.

Valid attribute ID numbers range from 0 to the number of attributes minus 1. The number of attributes of a file, group, or variable can be found using the relevant inquiry function (file.inq.nc, grp.inq.nc, or var.inq.nc).

Author(s)

Pavel Michna, Milton Woods

References

https://www.unidata.ucar.edu/software/netcdf/

Examples

##  Create a new NetCDF dataset and define two dimensions
file1 <- tempfile("att.delete_", fileext=".nc")
nc <- create.nc(file1)

dim.def.nc(nc, "station", 5)
dim.def.nc(nc, "time", unlim=TRUE)

##  Create two variables, one as coordinate variable
var.def.nc(nc, "time", "NC_INT", "time")
var.def.nc(nc, "temperature", "NC_DOUBLE", c(0,1))

##  Put some attributes
att.put.nc(nc, "temperature", "_FillValue", "NC_DOUBLE", -99999.9)
att.put.nc(nc, "NC_GLOBAL", "title", "NC_CHAR", "Data from Foo")

##  Delete these attributes
att.delete.nc(nc, "temperature", "_FillValue")
att.delete.nc(nc, "NC_GLOBAL", "title")

close.nc(nc)
unlink(file1)

RNetCDF documentation built on May 29, 2024, 2:41 a.m.