Inquire About a NetCDF Attribute
Inquire about a NetCDF attribute.
att.inq.nc(ncfile, variable, attribute)
ncfile |
Object of class " |
variable |
Either the ID or the name of the attribute's variable or |
attribute |
Either the ID or the name of the attribute to be inquired. |
This function returns information about a NetCDF attribute. Information about an attribute include its ID, its name, its type, and its length. In general, attributes are accessed by name rather than by their ID number because the attribute number is more volatile than the name, since it can change when other attributes of the same variable are deleted.
A list containing the following components:
id |
Attribute ID. |
name |
Attribute name. |
type |
External NetCDF data type as one of the following labels: |
length |
Length of this attribute. |
Pavel Michna, Milton Woods
## Create a new NetCDF dataset and define two dimensions
file1 <- tempfile("att.inq_", 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")
## Inquire about these attributes
att.inq.nc(nc, "temperature", "_FillValue")
att.inq.nc(nc, "NC_GLOBAL", "title")
close.nc(nc)
unlink(file1)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.