[GRASS5] Re: [GRASSLIST:626] Re: LRS

[David Finlayson]

I don't think waypoint is a good term to use:

A "milepost" is a datum in a linear coordinate system.
A "waypoint" is a station used to define a navigable route.

A waypoint can be defined in terms of a milepost, but the converse is
not true. A waypoint  is defined only on the chart (or GPS today) as a
means of directing the course of a journey. Whereas a milepost (or
milestone) is often a real sign posted on the side of the road. A
milepost is a name for a spot on the earth.

Considering how much naviagation is being done in GIS through the use
of GPS waypoints, it would be confusing to introduce an unconventional
definition of the word "waypoint".




On 4/7/06, Michael Barton <michael.barton at asu.edu> wrote:
> A couple ideas on terminology below.
>
>
> How about using the GPS term 'waypoints' this avoids reference to a
> particular distance measuring system (mileposts).
>
>
> On 4/7/06 2:03 AM, "Radim Blazek" <radim.blazek at gmail.com> wrote:
>
> >> 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.
> >
> > Currently called 'milepost'.
> >
> > On 3/31/06, Tim Semmelhaack <t.semmelhaack at hamburg-consult.de> wrote:
> >> I German we use the expression "Kilometrierung" but I haven't found an
> >> English counterpart.
> >
> > On 4/1/06, Hamish <hamish_nospam at yahoo.com> wrote:
> >> In the U.S. it will be called like "Mile 17".
> >
> > Yes, it will be probably difficult to avoid mile or kilometer in the
> > name.
> >
> > On 4/1/06, Markus Neteler <neteler at itc.it> wrote:
> >> http://dict.leo.org/cgi-bin/dict/forum.cgi?action=show&group=forum002_new&sor
> >> t_order=&list_size=30&list_skip=60&file=20050820084422
> >> Kilometrierung = chainage?
> >
> > According to the link they use 'chainage' for complete notati,
> > i.e. km+m that means 1) + 2) :
> > | Chainage is entered and displayed as whole kilometers (1,000 meters) plus a
> > | number of meters.
> >
> >> 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.
> >
> > Currently called 'offset'
>
> This seems like a good term.
>
> >
> > On 4/1/06, Hamish <hamish_nospam at yahoo.com> wrote:
> >> interval?
> >
> > I feel that interval is something between 2 points on the same
> > level of importance and without 'direction'.
> >
> >> the "lead"? (as in leader not Pb)
> >
> >> 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
> >
> > Currently called 'v.lrs.stationing'
> >
> > On 3/31/06, Laurent C. <lrntct at gmail.com> wrote:
> >> v.lrs.label ?
> >
> > There are also the strokes not just labels.
>
> 'Tick marks' or just 'ticks' is probably more appropriate.
>
>
> Michael
> ___________________________
> Michael Barton, Professor of Anthropology
> School of Human Evolution & Social Change
> Center for Social Dynamics & Complexity
> Arizona State University
>
> WWW - http://www.public.asu.edu/~cmbarton
> Phone: 480-965-6262
> Fax: 480-965-7671
>
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--
David Finlayson