Re: [CF-metadata] Usage of the 'Conventions' attribute

2013-01-29 Thread David Hassell
Hello Nan, et al., > Any of these special characters, other than the '_', would probably > cause problems for code that deals with NetCDF files. The '.' is > used in Matlab for access to structures, and the '@' is used to > identify a variable as a function handle. There are work-arounds, > but th

Re: [CF-metadata] Usage of the 'Conventions' attribute

2013-01-29 Thread David Hassell
Hello Dennis > It should be noted however that dot in particular > causes problems for accessing remote datasets > through DAP because the dot character is used > in DAP constraints to specify fields inside > DAP Sequences or Structures or Grids. I'm afraid that I'm not familiar with DAP. Do you

Re: [CF-metadata] Usage of the 'Conventions' attribute

2013-01-29 Thread Bentley, Philip
Hi Dennis, > With respect to netcdf (at least the C version), it is the > case that these characters can appear > unescaped: _.@+- > > It should be noted however that dot in particular causes > problems for accessing remote datasets through DAP because > the dot character is used in DAP cons

Re: [CF-metadata] Usage of the 'Conventions' attribute

2013-01-29 Thread Nan Galbraith
There is no interaction with the syntax of the processing language, surely? I checked to see if the Matlab NetCDF built-in routines would allow attributes with dots in them, and they do; both global and variable level atts can contain 'cf.'. My code, though, has to be able to write files for a

Re: [CF-metadata] Usage of the 'Conventions' attribute

2013-01-29 Thread Bentley, Philip
Hi Nan, > I agree with Roy that CF should be the default namespace in a > CF compliant file... What does that mean? Until we agree on the meaning and mechanism of namespace-handling within CF-compliant files and software, I fear that such statements do not provide much guidance at the practica