[GRASS-dev] Re: Line of Sight Update
Paul Kelly
paul-grass at stjohnspoint.co.uk
Wed Jul 23 06:35:42 EDT 2008
On Wed, 23 Jul 2008, Markus Neteler wrote:
> On Wed, Jul 9, 2008 at 8:11 PM, Will <willster3021 at gmail.com> wrote:
[...]
>> It is done exactly the way you mentioned in the other email, finding the
>> radius of the elipsoid and reducing the elevatin of the cell that you are
>> looking at depending on the distance it is away from the viewpoint. The way
>> r.los does it is they have a flag that you set if you want the curvature to
>> be considered, though I can impliment it for all calculations without a flag
>> if we think that will be better- any input from the list on this?
>
> I would keep the flag if there aren't too many.
Yes, agreed it should be optional - someone might want to use the module
in an XY environment without large-scale real-world considerations such as
earth curvature.
Paul
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