added documentation of attribute reserved names to user guide

This commit is contained in:
Ed Hartnett 2018-03-30 11:57:26 -06:00
parent 168340a8b6
commit 1546b4a91f

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@ -633,6 +633,17 @@ scalar values are treated as single-element vectors.
Conventional attribute names should be used where applicable. New
names should be as meaningful as possible.
Some attribute names are reserved by netCDF and cannot be created by the
user. Attepts to create attributes with any of these names will return
a ::NC_ENAMEINUSE error.
The reserved names are:
- _Format
- _nc3_strict
- _NCProperties
- _IsNetcdf4
- _SuperblockVersion
The external type of an attribute is specified when it is created. The
types permitted for attributes are the same as the netCDF external
data types for variables. Attributes with the same name for different