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Re: 20010627: ncgen

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  • Subject: Re: 20010627: ncgen
  • Date: Wed, 27 Jun 2001 13:49:53 -0600
>To: address@hidden
>From: address@hidden
>Subject: ncgen
>Organization: UCAR/Unidata
>Keywords: 200106271911.f5RJBJ123848

Hi Anand,

> I am a student in University of Stony Brook New York using netcdf data
> formats for x ray microtomograpy experiments. Recently i had to go to other
> facility for my measurements who use hdf format of data. I have all my
> analysis softwares and programs written for netcdf formats so was
> attempting to convert the hdf into netcdf format. I used ncdump to write a
> cdl and while using ncgen to write cdl into netcdf format, i get the
> following error
> 
> ncgen: *.cdl line 8:signal not declared as a variable, fatal error
> 
> the line 8 in cdl file says
> 
> data:signal = 1 ;
> 
> Please let me know if you encountered such an error and recommend any fix.

The word "data" is a reserved word in CDL (as are "dimensions" and
"variables"), so the CDL parser interprets the statement

  data:signal = 1 ;

as specifying values for the undeclared variable "signal", rather than
as specifying the value of the attribute "signal" of the variable
named "data".  Getting around this requires either rewriting the
grammar for CDL so it permits a variable named "data" (I don't know
whether this is practical) or renaming the variable from "data" to
something else ...

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu