[Talk-us] Parks, etc. Points or outlines
Hi all, In doing the remap in LA, I've run across parks, some schools and other map features that are marked with both points and outlines. For La Cienega Park, the park is outlined, coded "park" and named. There also is a point for La Cienega Park. My initial impulse was to delete the point, because the outline captured so much more information, but I thought I would ask first. Charlotte Charlotte Wolter 927 18th Street Suite A Santa Monica, California 90403 +1-310-597-4040 techl...@techlady.com Skype: thetechlady The Four Internet Freedoms Freedom to visit any site on the Internet Freedom to access any content or service that is not illegal Freedom to attach any device that does not interfere with the network Freedom to know all the terms of a service, particularly any that would affect the first three freedoms. ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
Charlotte Wolter writes: > In doing the remap in LA, I've run across parks, some schools > and other map features that are marked with both points and outlines. > For La Cienega Park, the park is outlined, coded "park" and > named. There also is a point for La Cienega Park. My initial impulse > was to delete the point, because the outline captured so much more > information, but I thought I would ask first. Typically there are points from a GNIS import, and usually they were not too accurate. Then if someone draws the park nicely, there is better geometry. There is some notion of merging the gnis tags onto the boundary way so that some future process of "show me all the objects in gnis that are not on the map" would make more sense, but this is going to be a mess anyway. So I'd say that if the point object looks like gnis, then copy the gnis id tag to the way and nuke the point. If the point object isn't from some other database, then it might as well be deleted. pgpUOSMjR1UHI.pgp Description: PGP signature ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
On Tue, Apr 24, 2012 at 1:21 PM, Charlotte Wolter wrote: > Hi all, > > In doing the remap in LA, I've run across parks, some schools and > other map features that are marked with both points and outlines. For La > Cienega Park, the park is outlined, coded "park" and named. There also is a > point for La Cienega Park. My initial impulse was to delete the point, > because the outline captured so much more information, but I thought I would > ask first. Yes, there should be only one feature for each real world object, and the way/multipolygon has more spatial information, however the nodes might have other useful information like the GNIS feature ID. The best process is to copy/merge tags and relation memberships from the node to the area. If you use JOSM, the utilsplugin2 plugin has a Replace Geometry command which does all this for you in one step (simply select the node and the way, then press Ctrl+Shift+G). Read the wiki [1] for more details. If you use Potlatch2, this is much more time consuming. -Josh [1]: http://wiki.openstreetmap.org/wiki/JOSM/Plugins/utilsplugin2#Replace_Geometry ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
If there is a point and an area I keep the area and delete the point. If the point has data I'd like to keep, as is often the case when I trace a park on the map and want to use the name and other info from a GNIS point I simply copy the attributes over. To easily copy the attributes over in JOSM I select the point, control+c to copy, select the way, and then control+shift+v copies in the attributes. I think I used to do this in Potlatch but that might have been the old one. If you don't feel like doing that and the area features are already drawn and already have names and type attributes, feel free to just delete the GNIS point. Other than elevation there usually isn't anything else that is particularly interesting in there. Cheers, Greg On Tue, Apr 24, 2012 at 11:38 AM, Josh Doe wrote: > On Tue, Apr 24, 2012 at 1:21 PM, Charlotte Wolter > wrote: > > Hi all, > > > > In doing the remap in LA, I've run across parks, some schools and > > other map features that are marked with both points and outlines. For La > > Cienega Park, the park is outlined, coded "park" and named. There also > is a > > point for La Cienega Park. My initial impulse was to delete the point, > > because the outline captured so much more information, but I thought I > would > > ask first. > > Yes, there should be only one feature for each real world object, and > the way/multipolygon has more spatial information, however the nodes > might have other useful information like the GNIS feature ID. The best > process is to copy/merge tags and relation memberships from the node > to the area. If you use JOSM, the utilsplugin2 plugin has a Replace > Geometry command which does all this for you in one step (simply > select the node and the way, then press Ctrl+Shift+G). Read the wiki > [1] for more details. If you use Potlatch2, this is much more time > consuming. > > -Josh > > [1]: > http://wiki.openstreetmap.org/wiki/JOSM/Plugins/utilsplugin2#Replace_Geometry > > ___ > Talk-us mailing list > Talk-us@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-us > ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
On 4/24/2012 2:38 PM, Josh Doe wrote: Yes, there should be only one feature for each real world object, and the way/multipolygon has more spatial information, however the nodes might have other useful information like the GNIS feature ID. For this matter, why are there county nodes all over the U.S.? They don't seem to have come from GNIS: http://www.openstreetmap.org/browse/node/316947053/history ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
Nathan Edgars II wrote: > On 4/24/2012 2:38 PM, Josh Doe wrote: > > Yes, there should be only one feature for each real world object, > and > > the way/multipolygon has more spatial information, however the nodes > > might have other useful information like the GNIS feature ID. > > For this matter, why are there county nodes all over the U.S.? They > don't seem to have come from GNIS: > http://www.openstreetmap.org/browse/node/316947053/history > One possibility is that they come from mappers using programs that can create POIs, but lack the ability to create ways. Many cell phone mapping apps have this limitation. -- John F. Eldredge -- j...@jfeldredge.com "Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
On Tue, Apr 24, 2012 at 9:02 PM, John F. Eldredge wrote: > Nathan Edgars II wrote: > >> On 4/24/2012 2:38 PM, Josh Doe wrote: >> > Yes, there should be only one feature for each real world object, >> and >> > the way/multipolygon has more spatial information, however the nodes >> > might have other useful information like the GNIS feature ID. >> >> For this matter, why are there county nodes all over the U.S.? They >> don't seem to have come from GNIS: >> http://www.openstreetmap.org/browse/node/316947053/history >> > > > One possibility is that they come from mappers using programs that can create > POIs, but lack the ability to create ways. Many cell phone mapping apps have > this limitation. No, they were imported. The import left them all on the extreme eastern and often southern corner of the county. I have moved a lot of them to approximately the center. I think the reason they exist is the same reason why cities always have a node in addition to their administrative boundaries. And states/countries too far that matter. Most renderers render the name from the nodes, not the admin boundaries. The reason I started moving the county nodes is that I saw the county name labels were in odd locations on Mapquest Open. Not saying this is ideal... but that's the way things are at the moment. But most features do render from boundary ways/relations. So in the case of parks, definitely only the outline is needed. Toby ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Parks, etc. Points or outlines
On 4/24/2012 10:21 PM, Toby Murray wrote: I think the reason they exist is the same reason why cities always have a node in addition to their administrative boundaries. And states/countries too far that matter. Most renderers render the name from the nodes, not the admin boundaries. This makes sense for a city, where the center/downtown is not the centroid. But for a county or larger, you usually want the label at the centroid of the polygon, so the node is redundant. ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
