Oops, of course that the shortest distance will be perpendicular. I should do one thing at a time... trying to code while in a field trip in the Amazon is not the best idea...
-- Carlos Grohmann Sent with Sparrow (http://www.sparrowmailapp.com/?sig) On Thursday, 10 de May de 2012 at 17:28, Carlos Grohmann wrote: > Thanks Micha. I though of v.distance but I wasn't sure if the connectors > would be perpendicular > > -- > Carlos Grohmann > Sent with Sparrow (http://www.sparrowmailapp.com/?sig) > > > On Thursday, 10 de May de 2012 at 14:42, Micha Silver wrote: > > > On 05/10/2012 06:31 PM, Carlos Grohmann wrote: > > > Hi all > > > I'm thinking if there is a way to project a series of points into a > > > line, but this projection must be in a direction perpendicular to the > > > line. > > > > > One approach is a three step process: > > 1- Begin with v.distance from your points to the line. The 'output' > > parameter will be a line vector of the (perpendicular) connectors from the > > points to the line. > > 2- Next do v.patch to merge the connectors to the line. > > 3- And finally v.clean with tool=break error=connector_points. The 'error' > > parameter contains all those points where a new intersection had to be > > created after patching the connectors to the line vector. > > > > (There is a chance that one connector will intersect the line exactly on a > > node, and then v.clean won't find that point since it's not an 'error'. But > > that's probably a very rare case.) > > > > HTH, > > Micha > > > Tks > > > > > > -- > > > Carlos Grohmann > > > Sent with Sparrow (http://www.sparrowmailapp.com/?sig) > > > > > > > > > This mail was received via Mail-SeCure System. > > > > > > > > > _______________________________________________ grass-user mailing list > > > grass-user@lists.osgeo.org (mailto:grass-user@lists.osgeo.org) > > > http://lists.osgeo.org/mailman/listinfo/grass-user This mail was received > > > via Mail-SeCure System. > > > > > > -- Micha Silver GIS Consultant, Arava Development Co. > > http://www.surfaces.co.il >
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