From dmorissette at mapgears.com  Tue Sep 11 08:28:45 2007
From: dmorissette at mapgears.com (Daniel Morissette)
Date: Tue Sep 11 08:29:39 2007
Subject: [Mitab] Question about how to determine if there is no geometry.
In-Reply-To: <46D7FE59020000650000021D@gwserver.mng.slavneft.ru>
References: <46D7FE59020000650000021D@gwserver.mng.slavneft.ru>
Message-ID: <46E689FD.7030209@mapgears.com>

?????? ???????????? ????? wrote:
> 
> My question is how using mitab_c_api i can determine that there is no geometry at all, I mean, no MAP file but only tab and dat present.

mitab_c_get_parts() should return 0 if a given feature has no geometry 
(i.e. is of type NONE).

There is no way to find out via the C API whether there is a .MAP file 
or not at the moment. You can only test individual features using 
mitab_c_get_parts().


> Also I want to know precision of coords returned, 'cause i will pass it through SQL (or PL/SQL, i've not decided yet) scripts, and want to know whether this idea is good.
> 

Unfortunately this information is not available via the C API either. 
It's available in the TABMAPHeaderBlock object in the C++ classes but 
not directly accessible via the C API.

Daniel
-- 
Daniel Morissette
http://www.mapgears.com/