Hi, could you create an enhancement ticket (https://trac.osgeo.org/grass/) and copy your description there, so that we can keep better track of this issue? Emails get lost...
Thank you, Anna On Sat, Jan 20, 2018 at 10:21 PM, Garth Fletcher <[email protected]> wrote: > m.cogo converts sequences of bearing,distance pairs into coordinates > > The bearing entry is in the form "N 52:17:04 W" widely used in survey maps. > > However, many surveys use magnetic bearings which are rotated from > true geographic North by an angle called the Declination - which itself > depends on the date and location. > > When working with such data it is first necessary to convert the > magnetic bearing by adding(subtracting) the Declination as known > for the date and location of the survey. > > This is tedious when a survey could consist of hundreds of bearings, > especially when adding a 15° declination "wraps around" a bearing, for > example, from N 10 E to N 5 W. > > It would be very helpful if one could provide a Declination argument > to m.cogo which would be added to each bearing. All that is needed > in processing is to add the Declination value to the Azimuth and > handle the special cases of result <0 or >= 360. > > Way above my skill level, but I'm hoping somebody might take an interest. > > Cordially, > -- > Garth Fletcher > _______________________________________________ > grass-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-dev _______________________________________________ grass-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-dev
