[GRASSLIST:503] Re: [GRASS5] LRS

[Markus Neteler]

Radim,
(cc strk)

this is great news! Maybe the wording could be synchronized
with that of PostGIS?
 http://postgis.refractions.net/docs/ch06.html#id2793484

I think that Christoph Spoerri and strk are working on it:
 http://postgis.refractions.net/pipermail/postgis-devel/2005-April/001338.html
 http://postgis.refractions.net/pipermail/postgis-devel/2005-November/001652.html

Since both GRASS-LRS and PostGIS-LRS are in development,
it will hopefully be possible to synchronize the terminology.

Markus

On Fri, Mar 31, 2006 at 11:13:24AM +0200, Radim Blazek wrote:
> I would like to include my implementation of LRS
> (lineare reference system) which was available here
> http://mpa.itc.it/radim/lrs/index.html
> in standard GRASS distribution.
> 
> The LRS supports georeferencing of points and segments
> given by linear feature, e.g. a road and a position on the
> linear feature in real world for exemple km+meters.
> It can also do reverse task, that means to report linear feature
> and position (road nr., km+m) for point (near the road).
> 
> I have a question about terminology, I am in doubts how to call
> 
> 1) The value specifying certain fix point in real world, e.g.
>   milepost, milestone. The point has usually a physical representation
>   but I mean the value it represents i.e. mile, kilometer,
>   not the physical object.
> 
> 2) The value which specifies the distance along a linear object
>     from 1) (from milepost) to a certain position on the linear feature.
>     The distance is given for example in meters or feets.
> 
> 3) How to call the module which generates labels of existing LRS
>     Here is example of a map with labels and strokes generated
>     byt this module: http://mpa.itc.it/radim/lrs/stationing-small.png
> 
> I hope that native english speakers and people working with LRS can help.
> 
> Thanks
> Radim