Re: [talk-au] Wild guess surveying
On Wed, 17 Dec 2008, Sam Couter wrote: > > A straight line between two places is better than no line. > > A straight line is at least topographically correct, which for road > navigation is incredibly useful. > -- *If* the ways are actually connected. While this list recently looked at Geelong and saw this problem, there is a prolific maker of ways in CentralWest NSW who does this, that is, makes many unconnected ways, ways cross with no node, ways have no names, and the ways don't line up with GPS traces. Actually my significant other has a long list of complaints about this "maker of ways" and is listing them now. I'll tell him to join the mailing list and not muddle his whinges up with mine. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Wild guess surveying
80n <80n...@gmail.com> wrote: > A straight line between two places is better than no line. A straight line is at least topograhically correct, which for road navigation is incredibly useful. -- Sam Couter | mailto:s...@couter.id.au OpenPGP fingerprint: A46B 9BB5 3148 7BEA 1F05 5BD5 8530 03AE DE89 C75C ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Wild guess surveying
On Mon, Dec 15, 2008 at 2:47 AM, Darrin Smith wrote: > On Mon, 15 Dec 2008 10:35:01 +0900 > "Andrew Laughton" wrote: > > > Yes, very easy to fix, and I have fixed other roads that were also > > wrong, the worry is, how many others need fixing and where are they. > > Maybe a polite message could solve the problem, or maybe a rough > > position is better than no position, and there is no problem. > > I think there's actually 2 issues you've hit on in this. One you > outline here and the other is the issue of what the original author > used as a source for the estimation. > > On the issue you have listed here I'd suggest at some level it would > be a good thing to have rough estimations drawn in, at least for major > features (which landsat can provide if nothing else), an empty block of > map just doesn't help anyone at all really. Data can always get more > accurate as time goes by as someone with more specific information > refines the paths, much like you are doing in this case. When new data > obviously over-rides older data in the map people should not have > hesitation correcting things. > Incremental improvement is the wiki-way. And even what we consider to be good mapping at the moment will get improved over time as better technology and better sources come along. A straight line between two places is better than no line. 80n > > The other issue is a potentially nastier one, especially given that > landsat supports something approximating the traces you made in this > case, I worry that your suspicions may be correct, or perhaps that the > person who drew it in based it upon personal experience from a long > time ago (dodgy source at best ;). I think a polite message suggesting > that you are concerned about the source of his data might not go astray > in this case. > > -- > Darrin Smith > s...@salseast.org > > ___ > Talk-au mailing list > Talk-au@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-au > ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Wild guess surveying
On Mon, 15 Dec 2008 10:35:01 +0900 "Andrew Laughton" wrote: > Yes, very easy to fix, and I have fixed other roads that were also > wrong, the worry is, how many others need fixing and where are they. > Maybe a polite message could solve the problem, or maybe a rough > position is better than no position, and there is no problem. I think there's actually 2 issues you've hit on in this. One you outline here and the other is the issue of what the original author used as a source for the estimation. On the issue you have listed here I'd suggest at some level it would be a good thing to have rough estimations drawn in, at least for major features (which landsat can provide if nothing else), an empty block of map just doesn't help anyone at all really. Data can always get more accurate as time goes by as someone with more specific information refines the paths, much like you are doing in this case. When new data obviously over-rides older data in the map people should not have hesitation correcting things. The other issue is a potentially nastier one, especially given that landsat supports something approximating the traces you made in this case, I worry that your suspicions may be correct, or perhaps that the person who drew it in based it upon personal experience from a long time ago (dodgy source at best ;). I think a polite message suggesting that you are concerned about the source of his data might not go astray in this case. -- Darrin Smith s...@salseast.org ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Wild guess surveying
Yes, very easy to fix, and I have fixed other roads that were also wrong, the worry is, how many others need fixing and where are they. Maybe a polite message could solve the problem, or maybe a rough position is better than no position, and there is no problem. 2008/12/15 Ross Scanlon : > Easily fixed then. > > Upgrade the road to your trace. > > > > On Mon, 15 Dec 2008 06:23:26 +0900 > "Andrew Laughton" wrote: > >> Hi All >> >> This might be just a survey with long gaps between points, but my >> Whereis based GPS also has the same road layout. >> I am a little worried that someone has copied another map, complete with >> faults. >> Look at my trace relative to what the road is drawn at. >> >> Is "Drewboy" in this forum ? >> >> http://www.openstreetmap.org/edit?lat=-32.30935&lon=116.6188&zoom=15 >> >> http://maps.google.com.au/maps?f=q&hl=en&geocode=&q=Brookton+Hwy+WA,+Australia&sll=-32.933423,117.176404&sspn=0.049202,0.072527&g=Narrogin+WA,+Australia&ie=UTF8&ll=-32.310331,116.616011&spn=0.012386,0.027294&z=16 >> >> http://www.whereis.com/wa/westdale/irish-rd?id=4A15D99A141317 >> >> ___ >> Talk-au mailing list >> Talk-au@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-au >> > > ___ > Talk-au mailing list > Talk-au@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-au > ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Wild guess surveying
Easily fixed then. Upgrade the road to your trace. On Mon, 15 Dec 2008 06:23:26 +0900 "Andrew Laughton" wrote: > Hi All > > This might be just a survey with long gaps between points, but my > Whereis based GPS also has the same road layout. > I am a little worried that someone has copied another map, complete with > faults. > Look at my trace relative to what the road is drawn at. > > Is "Drewboy" in this forum ? > > http://www.openstreetmap.org/edit?lat=-32.30935&lon=116.6188&zoom=15 > > http://maps.google.com.au/maps?f=q&hl=en&geocode=&q=Brookton+Hwy+WA,+Australia&sll=-32.933423,117.176404&sspn=0.049202,0.072527&g=Narrogin+WA,+Australia&ie=UTF8&ll=-32.310331,116.616011&spn=0.012386,0.027294&z=16 > > http://www.whereis.com/wa/westdale/irish-rd?id=4A15D99A141317 > > ___ > Talk-au mailing list > Talk-au@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-au > ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Wild guess surveying
On Mon, 15 Dec 2008, Andrew Laughton wrote: > Hi All > > This might be just a survey with long gaps between points, but my > Whereis based GPS also has the same road layout. > I am a little worried that someone has copied another map, complete with > faults. Look at my trace relative to what the road is drawn at. > > Is "Drewboy" in this forum ? > > http://www.openstreetmap.org/edit?lat=-32.30935&lon=116.6188&zoom=15 > > http://maps.google.com.au/maps?f=q&hl=en&geocode=&q=Brookton+Hwy+WA,+Austra >lia&sll=-32.933423,117.176404&sspn=0.049202,0.072527&g=Narrogin+WA,+Australi >a&ie=UTF8&ll=-32.310331,116.616011&spn=0.012386,0.027294&z=16 > > http://www.whereis.com/wa/westdale/irish-rd?id=4A15D99A141317 > Looks like a road realignment has occurred - maybe up to 20 years ago and the old maps don't show it. It is suspicious that someone has copied the old road alignment from those maps. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
[talk-au] Wild guess surveying
Hi All This might be just a survey with long gaps between points, but my Whereis based GPS also has the same road layout. I am a little worried that someone has copied another map, complete with faults. Look at my trace relative to what the road is drawn at. Is "Drewboy" in this forum ? http://www.openstreetmap.org/edit?lat=-32.30935&lon=116.6188&zoom=15 http://maps.google.com.au/maps?f=q&hl=en&geocode=&q=Brookton+Hwy+WA,+Australia&sll=-32.933423,117.176404&sspn=0.049202,0.072527&g=Narrogin+WA,+Australia&ie=UTF8&ll=-32.310331,116.616011&spn=0.012386,0.027294&z=16 http://www.whereis.com/wa/westdale/irish-rd?id=4A15D99A141317 ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
