[Xastir] NOS maps with Xastir

[Jason & Kim Conolly]

Hello!

I am trying to read a NOS map from SoftChart into Xastir.  I am 
currently using Xastir 1.4.2, with GDAL support compiled in (GDAL 
version 1.2.4.0).

The GDAL file compatability lists NOS as a subset of BSB.  (See excerpt 
below from RemoteSensing.org's GDAL format list).

However, I cannot get Xastir to index the .NOS map (now in my Xastir 
maps folder).  I'm wondering if there is a requirement for a specific 
file extension to get Xastir to recognize it (ala .S57) or possibly 
something else going on.  Ideas?

Thank you,
Jason / N7IME


    BSB -- Maptech/NOAA BSB Nautical Chart Format

BSB Nautical Chart format is supported for read access, including 
reading the colour table and the reference points (as GCPs). Note that 
the .BSB files cannot be selected directly. Instead select the .KAP 
files. Versions 1.1, 2.0 and 3.0 have been tested successfully.

This driver should also support GEO/NOS format as supplied by Softchart. 
These files normally have the extension .nos with associated .geo files 
containing georeferencing ... the .geo files are currently ignored.

This driver is based on work by Mike Higgins. See the 
frmts/bsb/bsb_read.c files for details on patents affecting BSB format.

NOTE: Implemented as gdal/frmts/bsb/bsbdataset.cpp.