Subject: [GRASSLIST:1007] Removing borders from USGS DLG SDTS.
Date: Sat, 23 Aug 2003 23:17:48 +0000
From: "Stonie R. Cooper" <stonie.cooper@planetarydata.com>
To: GRASSLIST@baylor.eduI have recently began to experiment with USGS DLG SDTS files, and was
wondering if anyone knew how to get rid of the "frame" or "border" that
presents itself as an artificial line in the resulting vector file. I'm
using the 1:100,00 DLG files, and the v.in.sdts to get the data into grass .
. . with no problems there, but assumed enough info existed in the SDTS db to
help remove the artificial border.Thanks in advance for any tips.
--
Stonie R. Cooper
Planetary Data, Incorporated
I'm no expert, but I did briefly explore SDTS borders using GRASS
5.0.2's v.out.ascii. The associated file in the cats directory shows a
bunch of category definitions such as
- - -
.
.
.
11:LE01#29
12:LE01#30
13:LE01#31
14:LE01#32
15:LE01#33
16:LE01#34
.
.
.
600:PC01#84
601:PC01#85
602:PC01#88
603:PC01#89
.
.
.
668:NO01#30
669:NO01#31
670:NO01#37
671:NO01#38
672:NO01#40
.
.
.
- - -
IIRC, plotting only the lines associated with the LE* categories got rid
of the borders.
Greg