[Talk-ca] Problem with overpasses in NB??
Here is an example - http://osm.org/go/cgZ854R_8-- The problem is that there is an intersection node between McKinnon Road and Route 8 but there is an overpass bridge at this location. I presume there is not supposed to be an intersection where roads cross at a bridge. In Potlatch2 both ways are at the default layer=ground - one way needs to be adjusted to indicate the grade separation. I noticed this at several other locations and made the corrections. But I am wondering if this problem originates with the Canvec data or if a mapper has created these intersections? Can somebody provide some additional insight? Is this also a problem in other provinces? Thanks, Bernie. -- Bernie Connors New Maryland, NB bernie.conn...@unb.ca ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
Re: [Talk-ca] Problem with overpasses in NB??
On Mon, Dec 2, 2013 at 1:24 PM, Connors, Bernie (SNB) bernie.conn...@snb.ca wrote: Here is an example - http://osm.org/go/cgZ854R_8-- The problem is that there is an intersection node between McKinnon Road and Route 8 but there is an overpass bridge at this location. That does look like an error, I've fixed that one. The history on the involved objects is short, and suggests that it is an import. Do you want to contact the mapper and ask about the matter? ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
Re: [Talk-ca] Problem with overpasses in NB??
Provinces provide roads to NRCan that simply package it for GeoBase and Canvec. I might be wrong but I am on the impression that some provinces (not all) create vertices at intersections (2D) and do not consider the elevation (3D). When converting to OSM, duplicated vertices (one on each road) are merged in one node. That might explain what you found Same thing for double spaces in name Daniel -Original Message- From: Richard Weait [mailto:rich...@weait.com] Sent: December-02-13 15:51 To: Connors, Bernie (SNB) Cc: Talk-CA OpenStreetMap Subject: Re: [Talk-ca] Problem with overpasses in NB?? On Mon, Dec 2, 2013 at 1:24 PM, Connors, Bernie (SNB) bernie.conn...@snb.ca wrote: Here is an example - http://osm.org/go/cgZ854R_8-- The problem is that there is an intersection node between McKinnon Road and Route 8 but there is an overpass bridge at this location. That does look like an error, I've fixed that one. The history on the involved objects is short, and suggests that it is an import. Do you want to contact the mapper and ask about the matter? ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
Re: [Talk-ca] Problem with overpasses in NB??
From: Daniel Begin [mailto:jfd...@hotmail.com] Sent: Monday, December 02, 2013 1:34 PM To: 'Richard Weait'; 'Connors, Bernie (SNB)' Cc: 'Talk-CA OpenStreetMap' Subject: Re: [Talk-ca] Problem with overpasses in NB?? Provinces provide roads to NRCan that simply package it for GeoBase and Canvec. I might be wrong but I am on the impression that some provinces (not all) create vertices at intersections (2D) and do not consider the elevation (3D). When converting to OSM, duplicated vertices (one on each road) are merged in one node. The problem is often one of formats. Shapefiles are often used to interchange this data, but shapefiles do not have topology. A common toolchain used for getting data from an ESRI-based server to shapefiles results in files that say that wherever two features cross they join. This is the type of mistake that someone doing an import needs to catch and fix before uploading. The fastest fix I've found in JOSM is to merge the two bridge ways, merge the two under-bridge ways, and delete the node where they intersect. ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
Re: [Talk-ca] Problem with overpasses in NB??
Richard, What I would like to do is run a query with the Overpass API that would identify the locations of this error so we can all judge how large an issue this is. Unfortunately I have never written an Overpass API query and I would like some assistance. Recently this query (http://goo.gl/AYJ0Nt) that identifies errors in Motorway links was shared on Talk-CA and I modified the bounding box to run it against New Brunswick. Can somebody help me out with a query that identifies unnecessary intersections in bridges? TIA, Bernie. -- Bernie Connors, P.Eng New maryland, NB bernie.conn...@unb.ca From: Richard Weait [rich...@weait.com] Sent: December 2, 2013 4:50 PM To: Connors, Bernie (SNB) Cc: Talk-CA OpenStreetMap Subject: Re: [Talk-ca] Problem with overpasses in NB?? On Mon, Dec 2, 2013 at 1:24 PM, Connors, Bernie (SNB) bernie.conn...@snb.ca wrote: Here is an example - http://osm.org/go/cgZ854R_8-- The problem is that there is an intersection node between McKinnon Road and Route 8 but there is an overpass bridge at this location. That does look like an error, I've fixed that one. The history on the involved objects is short, and suggests that it is an import. Do you want to contact the mapper and ask about the matter? ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
