[GRASS-dev] Vlib: how to delete an object from a GRASS vector map

[Benjamin Ducke]

Dear all,

I am struggling to understand how to delete an object, including its
attached attributes, from a GRASS vector map.

I open the map with:

Vect_open_update ( &Map, MAPS[i].tempname, mapset );

Then I find the category IDs of the objects I want to delete and then I
do:

Vect_delete_line ( &Map, cat );
Vect_field_cat_del ( Cats, field, cat );

and Vect_close() after the work is done.

However, the next module I try to run on the modified map
throws an error:

ERROR: Attempt to read dead line [282]

How do I eliminate dead lines from the map?

Thanks,

Ben

-- 
Benjamin Ducke
Senior Applications Support and Development Officer

Oxford Archaeology Ltd
Janus House
Osney Mead
OX2 0ES
Oxford, U.K.

Tel: +44 (0)1865 263 800 (switchboard)
Tel: +44 (0)1865 980 758 (direct)
Fax :+44 (0)1865 793 496
benjamin.ducke at oxfordarch.co.uk




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