[gdal-dev] question with field name read from ogrinfo

[Randy]

Hi Frank,
Thanks for your reply!
I know what you mean now, NAME_RCID can tell the difference between Feature
records' RCID and Spatial Records', and it is easily to know the NAME_RCNM
subfield is from Spatial Record from its prefix-"NAME".

Best regards,
Randy

-----Original Message-----
From: Frank Warmerdam [mailto:warmerdam at pobox.com] 
Sent: Saturday, March 13, 2010 12:51 AM
To: Randy
Cc: GDAL/OGR mailing list
Subject: Re: [gdal-dev] question with field name read from ogrinfo

> I read the "IHO transfer standard for digital hydrographic data 
> publication S-57 Edition 3.1-November 2000",and it tells me that one 
> spatial record should have a "Record name" and its field name is 
> [RCNM].But in ogrinfo ,it gives me a field name-"NAME_RCNM".
> 
> Then, I'd like to know if the ogrinfo's writer change the field name or 
> it means the [NAME_RCNM] is on the new S-57 version while [RCNM] is just 
> on the old version(3.1 edition)?

Randy,

I always called this field NAME_RCNM so it isn't about what edition it is
from.  I believe it is named this because it is the RCNM extracted from
the NAME field of the feature (FSPT).  I presume it is used to lookup
the RCNM and RCID in the set of spatial records when composing the geometry
for the feature.