Re: [talk-ph] mangroves, tidal lands
@ ed, I guess the right tag would be: natural=wetland wetland=mangrove http://wiki.openstreetmap.org/wiki/Mangrove Didn't saw that page when I tagged them last year. Changing tags now. On Fri, Jul 9, 2010 at 10:54 PM, Ed Garcia wrote: > @maning, I looked at your mangroves at Lian ... the coastline is actually > traversing the mangrove area, half on land and half on ocean, but it is > still being rendered as whole land. > > I believe it is because you used the landuse:forest tag while I used > natural:wetland tag as suggested by OSM for mangrove areas. > > The natural:wetland does not render as a green patch when it is on the water > side of the coastline. > > shall I use landuse:forest instead of natural:wetland instead? > > On Fri, Jul 9, 2010 at 10:09 PM, wrote: >> >> Can't find Mangrove here as a separate category. I believe normally >> coastlines are high-high waterlines. See this picture on my (site >> http://www.bohol.ph/picture206.html) for looks off a mangrove (near Loay, >> Bohol); this land will submerge a high tide. Picture can be used under CC-BY >> or CC-BY-SA if needed. >> >> Jeroen. >> >> >> Quoting maning sambale : >> >>> A proposed water_cover tagging: >>> http://wiki.openstreetmap.org/wiki/Proposed_features/Water_cover >>> >>> On Fri, Jul 9, 2010 at 3:39 PM, maning sambale >>> wrote: On Fri, Jul 9, 2010 at 11:15 AM, Ed Garcia wrote: > > Can I have your opinion on this, guys? it is about coastal mangrove > areas. > It is suggested, and I agree, to map mangrove areas as inland (inside > the > coastline). But I encountered the mangrove areas at Alburquerque, > Bohol and > the mangroves (seen on wms Lansat) are currently lying on the ocean > side. > The current coastline is along the actual edge of what is definitely > the > actual land. I have personally seen the coast myself when I was in the > Albuquerque area. > > > http://www.openstreetmap.org/?lat=9.6127&lon=123.954&zoom=14&layers=B000FTF > > Question: Shall I move the coastline seaward so that the mangroves > would > apear inland? IMO, no. Some mangroves in Lian, Batangas are more on the sea side. Hence, I didn't move the the coastline. http://osm.org/go/4yfxfytF5- I've walked around these mangroves stands for two full days. > This would in a way state that mangroves (or tidelands) are > land and thereby also state that coastlines for tidal lands and flats > are to > be drawn using the exposed areas during the lowest low tide (not just > the > mean tide as this will "cut" some mangrove areas in half). Classic > case for > tidal flats are in Calatagan, where the low tide exposes an additional > 150+m > of "land". I have this similar case in Talim Bay (Lian, Batangas). During low tides, the inter-tidal flats (locally known as tangkulan) are in hundreds of meters from the mean coast. http://farm2.static.flickr.com/1440/541589816_bf5bf812a2_b.jpg > Also, the above considers that some islands become "land" only on low > tides. The "if in doubt, map as land" mantra applies only if you're unfamiliar with the area. For everything else, it's your call provided you have verified on the ground. I think we should map inter-tidal zones as lines (this needs to be defined more) > > > > > -- > website administrator: > - www.waypoints.ph > - reeflife.eppgarcia.com > > PADI Divemaster #491048 > > ___ > talk-ph mailing list > talk-ph@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ph > > -- cheers, maning -- "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- >>> >>> >>> >>> -- >>> cheers, >>> maning >>> -- >>> "Freedom is still the most radical idea of all" -N.Branden >>> wiki: http://esambale.wikispaces.com/ >>> blog: http://epsg4253.wordpress.com/ >>> -- >>> >>> ___ >>> talk-ph mailing list >>> talk-ph@openstreetmap.org >>> http://lists.openstreetmap.org/listinfo/talk-ph >>> >> >> >> >> >> ___ >> talk-ph mailing list >> talk-ph@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-ph > > > > -- > website administrator: > - www.waypoints.ph > - reeflife.eppgarcia.com > > PADI Divemaster #491048 > > ___ > talk-ph mailing list > talk-ph@openstreetmap.org > h
Re: [talk-ph] mangroves, tidal lands
@maning, I looked at your mangroves at Lian ... the coastline is actually traversing the mangrove area, half on land and half on ocean, but it is still being rendered as whole land. I believe it is because you used the landuse:forest tag while I used natural:wetland tag as suggested by OSM for mangrove areas. The natural:wetland does not render as a green patch when it is on the water side of the coastline. shall I use landuse:forest instead of natural:wetland instead? On Fri, Jul 9, 2010 at 10:09 PM, wrote: > > Can't find Mangrove here as a separate category. I believe normally > coastlines are high-high waterlines. See this picture on my (site > http://www.bohol.ph/picture206.html) for looks off a mangrove (near Loay, > Bohol); this land will submerge a high tide. Picture can be used under CC-BY > or CC-BY-SA if needed. > > Jeroen. > > > > Quoting maning sambale : > > A proposed water_cover tagging: >> http://wiki.openstreetmap.org/wiki/Proposed_features/Water_cover >> >> On Fri, Jul 9, 2010 at 3:39 PM, maning sambale >> wrote: >> >>> On Fri, Jul 9, 2010 at 11:15 AM, Ed Garcia wrote: >>> Can I have your opinion on this, guys? it is about coastal mangrove areas. It is suggested, and I agree, to map mangrove areas as inland (inside the coastline). But I encountered the mangrove areas at Alburquerque, Bohol and the mangroves (seen on wms Lansat) are currently lying on the ocean side. The current coastline is along the actual edge of what is definitely the actual land. I have personally seen the coast myself when I was in the Albuquerque area. http://www.openstreetmap.org/?lat=9.6127&lon=123.954&zoom=14&layers=B000FTF Question: Shall I move the coastline seaward so that the mangroves would apear inland? >>> >>> IMO, no. Some mangroves in Lian, Batangas are more on the sea side. >>> Hence, I didn't move the the coastline. >>> >>> http://osm.org/go/4yfxfytF5- >>> >>> I've walked around these mangroves stands for two full days. >>> >>> This would in a way state that mangroves (or tidelands) are land and thereby also state that coastlines for tidal lands and flats are to be drawn using the exposed areas during the lowest low tide (not just the mean tide as this will "cut" some mangrove areas in half). Classic case for tidal flats are in Calatagan, where the low tide exposes an additional 150+m of "land". >>> >>> I have this similar case in Talim Bay (Lian, Batangas). During low >>> tides, the inter-tidal flats (locally known as tangkulan) are in >>> hundreds of meters from the mean coast. >>> >>> http://farm2.static.flickr.com/1440/541589816_bf5bf812a2_b.jpg >>> >>> Also, the above considers that some islands become "land" only on low tides. >>> The "if in doubt, map as land" mantra applies only if you're >>> unfamiliar with the area. For everything else, it's your call >>> provided you have verified on the ground. >>> >>> I think we should map inter-tidal zones as lines (this needs to be >>> defined more) >>> >>> >>> >>> -- website administrator: - www.waypoints.ph - reeflife.eppgarcia.com PADI Divemaster #491048 ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph >>> >>> >>> -- >>> cheers, >>> maning >>> -- >>> "Freedom is still the most radical idea of all" -N.Branden >>> wiki: http://esambale.wikispaces.com/ >>> blog: http://epsg4253.wordpress.com/ >>> -- >>> >>> >> >> >> -- >> cheers, >> maning >> -- >> "Freedom is still the most radical idea of all" -N.Branden >> wiki: http://esambale.wikispaces.com/ >> blog: http://epsg4253.wordpress.com/ >> -- >> >> ___ >> talk-ph mailing list >> talk-ph@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-ph >> >> > > > > ___ > talk-ph mailing list > talk-ph@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ph > -- website administrator: - www.waypoints.ph - reeflife.eppgarcia.com PADI Divemaster #491048 ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] mangroves, tidal lands
Can't find Mangrove here as a separate category. I believe normally coastlines are high-high waterlines. See this picture on my (site http://www.bohol.ph/picture206.html) for looks off a mangrove (near Loay, Bohol); this land will submerge a high tide. Picture can be used under CC-BY or CC-BY-SA if needed. Jeroen. Quoting maning sambale : A proposed water_cover tagging: http://wiki.openstreetmap.org/wiki/Proposed_features/Water_cover On Fri, Jul 9, 2010 at 3:39 PM, maning sambale wrote: On Fri, Jul 9, 2010 at 11:15 AM, Ed Garcia wrote: Can I have your opinion on this, guys? it is about coastal mangrove areas. It is suggested, and I agree, to map mangrove areas as inland (inside the coastline). But I encountered the mangrove areas at Alburquerque, Bohol and the mangroves (seen on wms Lansat) are currently lying on the ocean side. The current coastline is along the actual edge of what is definitely the actual land. I have personally seen the coast myself when I was in the Albuquerque area. http://www.openstreetmap.org/?lat=9.6127&lon=123.954&zoom=14&layers=B000FTF Question: Shall I move the coastline seaward so that the mangroves would apear inland? IMO, no. Some mangroves in Lian, Batangas are more on the sea side. Hence, I didn't move the the coastline. http://osm.org/go/4yfxfytF5- I've walked around these mangroves stands for two full days. This would in a way state that mangroves (or tidelands) are land and thereby also state that coastlines for tidal lands and flats are to be drawn using the exposed areas during the lowest low tide (not just the mean tide as this will "cut" some mangrove areas in half). Classic case for tidal flats are in Calatagan, where the low tide exposes an additional 150+m of "land". I have this similar case in Talim Bay (Lian, Batangas). During low tides, the inter-tidal flats (locally known as tangkulan) are in hundreds of meters from the mean coast. http://farm2.static.flickr.com/1440/541589816_bf5bf812a2_b.jpg Also, the above considers that some islands become "land" only on low tides. The "if in doubt, map as land" mantra applies only if you're unfamiliar with the area. For everything else, it's your call provided you have verified on the ground. I think we should map inter-tidal zones as lines (this needs to be defined more) -- website administrator: - www.waypoints.ph - reeflife.eppgarcia.com PADI Divemaster #491048 ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph -- cheers, maning -- "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- -- cheers, maning -- "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] mangroves, tidal lands
A proposed water_cover tagging: http://wiki.openstreetmap.org/wiki/Proposed_features/Water_cover On Fri, Jul 9, 2010 at 3:39 PM, maning sambale wrote: > On Fri, Jul 9, 2010 at 11:15 AM, Ed Garcia wrote: >> Can I have your opinion on this, guys? it is about coastal mangrove areas. >> It is suggested, and I agree, to map mangrove areas as inland (inside the >> coastline). But I encountered the mangrove areas at Alburquerque, Bohol and >> the mangroves (seen on wms Lansat) are currently lying on the ocean side. >> The current coastline is along the actual edge of what is definitely the >> actual land. I have personally seen the coast myself when I was in the >> Albuquerque area. >> >> http://www.openstreetmap.org/?lat=9.6127&lon=123.954&zoom=14&layers=B000FTF >> >> Question: Shall I move the coastline seaward so that the mangroves would >> apear inland? > > IMO, no. Some mangroves in Lian, Batangas are more on the sea side. > Hence, I didn't move the the coastline. > > http://osm.org/go/4yfxfytF5- > > I've walked around these mangroves stands for two full days. > >> This would in a way state that mangroves (or tidelands) are >> land and thereby also state that coastlines for tidal lands and flats are to >> be drawn using the exposed areas during the lowest low tide (not just the >> mean tide as this will "cut" some mangrove areas in half). Classic case for >> tidal flats are in Calatagan, where the low tide exposes an additional 150+m >> of "land". > > I have this similar case in Talim Bay (Lian, Batangas). During low > tides, the inter-tidal flats (locally known as tangkulan) are in > hundreds of meters from the mean coast. > > http://farm2.static.flickr.com/1440/541589816_bf5bf812a2_b.jpg > >> Also, the above considers that some islands become "land" only on low tides. > The "if in doubt, map as land" mantra applies only if you're > unfamiliar with the area. For everything else, it's your call > provided you have verified on the ground. > > I think we should map inter-tidal zones as lines (this needs to be defined > more) > > > >> >> >> >> >> -- >> website administrator: >> - www.waypoints.ph >> - reeflife.eppgarcia.com >> >> PADI Divemaster #491048 >> >> ___ >> talk-ph mailing list >> talk-ph@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-ph >> >> > > > > -- > cheers, > maning > -- > "Freedom is still the most radical idea of all" -N.Branden > wiki: http://esambale.wikispaces.com/ > blog: http://epsg4253.wordpress.com/ > -- > -- cheers, maning -- "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] mangroves, tidal lands
On Fri, Jul 9, 2010 at 11:15 AM, Ed Garcia wrote: > Can I have your opinion on this, guys? it is about coastal mangrove areas. > It is suggested, and I agree, to map mangrove areas as inland (inside the > coastline). But I encountered the mangrove areas at Alburquerque, Bohol and > the mangroves (seen on wms Lansat) are currently lying on the ocean side. > The current coastline is along the actual edge of what is definitely the > actual land. I have personally seen the coast myself when I was in the > Albuquerque area. > > http://www.openstreetmap.org/?lat=9.6127&lon=123.954&zoom=14&layers=B000FTF > > Question: Shall I move the coastline seaward so that the mangroves would > apear inland? IMO, no. Some mangroves in Lian, Batangas are more on the sea side. Hence, I didn't move the the coastline. http://osm.org/go/4yfxfytF5- I've walked around these mangroves stands for two full days. > This would in a way state that mangroves (or tidelands) are > land and thereby also state that coastlines for tidal lands and flats are to > be drawn using the exposed areas during the lowest low tide (not just the > mean tide as this will "cut" some mangrove areas in half). Classic case for > tidal flats are in Calatagan, where the low tide exposes an additional 150+m > of "land". I have this similar case in Talim Bay (Lian, Batangas). During low tides, the inter-tidal flats (locally known as tangkulan) are in hundreds of meters from the mean coast. http://farm2.static.flickr.com/1440/541589816_bf5bf812a2_b.jpg > Also, the above considers that some islands become "land" only on low tides. The "if in doubt, map as land" mantra applies only if you're unfamiliar with the area. For everything else, it's your call provided you have verified on the ground. I think we should map inter-tidal zones as lines (this needs to be defined more) > > > > > -- > website administrator: > - www.waypoints.ph > - reeflife.eppgarcia.com > > PADI Divemaster #491048 > > ___ > talk-ph mailing list > talk-ph@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ph > > -- cheers, maning -- "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
[talk-ph] mangroves, tidal lands
Can I have your opinion on this, guys? it is about coastal mangrove areas. It is suggested, and I agree, to map mangrove areas as inland (inside the coastline). But I encountered the mangrove areas at Alburquerque, Bohol and the mangroves (seen on wms Lansat) are currently lying on the ocean side. The current coastline is along the actual edge of what is definitely the actual land. I have personally seen the coast myself when I was in the Albuquerque area. http://www.openstreetmap.org/?lat=9.6127&lon=123.954&zoom=14&layers=B000FTF Question: *Shall I move the coastline seaward so that the mangroves would apear inland?* This would in a way state that mangroves (or tidelands) are land and thereby also state that coastlines for tidal lands and flats are to be drawn using the exposed areas during the lowest low tide (not just the mean tide as this will "cut" some mangrove areas in half). Classic case for tidal flats are in Calatagan, where the low tide exposes an additional 150+m of "land". Also, the above considers that some islands become "land" only on low tides. -- website administrator: - www.waypoints.ph - reeflife.eppgarcia.com PADI Divemaster #491048 ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
