[GRASS5] [bug #3188] (grass) v.net.iso: some roads cost, others distance: sorry

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this bug's URL: http://intevation.de/rt/webrt?serial_num=3188
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v.net.iso afcolumn=cost allows us to use a cost instead of a distance
for segments.

OK, what if on some of my roads I want to use cost, and some I want to
use distance?

Surprise surprise, nope. It's either all cost, all distance, or close
the road with -1.

Forget about DELETE FROM table WHERE cat =
road_I_want_measured_by_distance, v.net.iso will go nuts.

OK, then what are you going to set its value to in the table, -1? 0?
-1 is for closed roads. 0 is for 0 cost roads.

Nope. "The software engineers never considered this possibility."!!!

The solution for now would be: if the row is not found in the table,
then measure distance. Better would be -2: use distance.


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To: GRASSLIST at baylor.edu
Cc: grass-bugs at intevation.de
Subject: v.net.iso: some roads cost, others distance: sorry
From: Dan Jacobson <jidanni at jidanni.org>
Date: Wed, 27 Apr 2005 05:00:27 +0800
Message-ID: <873btd6yok.fsf at jidanni.org>
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