Buffering is done here http://mapperz.brinkster.net/Drive_Time/index.html click 'Draw' double click to finish the line is buffered. (by 2000 feet)
unfortunately you need a spatial database to do this in this case arcgis server is doing the processing (buffering & intersecting) but to save money - postgres with postgis can do it for free Mapperz http://mapperz.blogspot.com/2008/07/gis-geoprocessing-google-maps-api.html On Nov 27, 1:42 pm, Anthony <[EMAIL PROTECTED]> wrote: > What you are looking for is called buffering is GIS. From a given > polyline (or point or polygon), you can buffer it a certain distance > and get a polygon. Buffering is not always an easy thing to do though, > especially from scratch such as using parallel lines, which can > produce inside-out artifacts, etc. > > However, if you're going back to the (spatial?) database server to do > the comparison, there is likely functionality there to buffer lines > and/or check for overlap of lines with a tolerance. Even if there > isn't, you're still probably better off building something on the > server than trying to do it in JavaScript. > > On Nov 26, 10:23 pm, mfemia <[EMAIL PROTECTED]> wrote: > > > Bill's function works great when the gap value is set low but when I > > increase it to 500px approx. 250-300m at the highest zoom level, it > > generates polylines that would produce an 'inside out' polygon. > > > Link:www.uvm.edu/~mfemia/parallel.php > > > On Nov 26, 7:56 pm, Esa <[EMAIL PROTECTED]> wrote: > > > > I think you are searching something like Bill's parallel > > > polylineshttp://wheresthepath.googlepages.com/parallellines.htm > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
