There was discussion in ncdigest V1 #887 on reserving header space using
the double underbar tuning function nc__enddef.
I believe there is a need to:
1. Clarify the status of the three double underbar tuning functions
nc__create, nc__open and nc__enddef
2. Make clearer recommendations about their use.
The NetCDF C Interface Guide contains section 2.10 headed
"Leave Define Mode with Performance Tuning: nc__enddef" with URL
http://my.unidata.ucar.edu/content/software/netcdf/docs/netcdf-c/nc_005f
_005fenddef.html#nc_005f_005fenddef
This section contains the following warning paragraph:
Caution: this function exposes internals of the netcdf version 1 file
format. Users should use nc_enddef in most circumstances. This function
may not be available on future netcdf implementations.
Does this warning apply to all three tuning functions?
Are these functions supported by
1. OPeNDAP (DODS)
2. netCDF-4?
Harvey Davies, CSIRO Atmospheric Research,
Private Bag No. 1, Aspendale 3195
E-mail: harvey.davies@xxxxxxxx
Office: 03 9239 4556
Mobile: 04 2241 7563
Fax: 03 9239 4444
