Re: [talk-ph] Correcting Philippine coastlines
I have the whole OSM PH coastline from osmxapi. If you want, I can review the coastline and add a tag that can flag which segments can be deleted. If this is OK to everyone, I will do it. Any suggestions? cheers, maning PS. This may take quite a while though. On Sun, Sep 28, 2008 at 5:17 PM, Ian Haylock [EMAIL PROTECTED] wrote: Hi, I have downloaded the whole coastline in two parts. This is because the Philippines is split between areas 11 and 23 I tried editing the two areas using JOSM, but it's just too slow :-( So I tried using osmosis to split the areas into smaller parts, but for some reason all that remained after the splitting was the nodes, and no ways. It is possible to use coast_josm.pl to make smaller sections of the Philippines, but I have not tried this yet. I think the best way to get the new coastline would be to fix it offline using josm, then upload it over the existing coastline. Maybe tag it with something like PGS2008 and FIXME so it's easy to find and select in josm. Maybe delete the original SRTM coastline first, but then you need to know all the places people have edited, but not removed the SRTM tag. Editing 7000 individually, instead of a bulk upload is going to take a lng time. Cheers, Ian --- On Fri, 26/9/08, maning sambale [EMAIL PROTECTED] wrote: From: maning sambale [EMAIL PROTECTED] Subject: Re: [talk-ph] Correcting Philippine coastlines To: [EMAIL PROTECTED], talk-ph@openstreetmap.org Date: Friday, 26 September, 2008, 11:39 AM IanHaylock, I'm having problem downloading the the PGS coastline, I'm trying for the whole country. Any Ideas why? cheers, maning found this page : http://www.lenz-online.de/divers/osm/ this page provides a simple way to download the PGS coastline. I've tried downloading one of the Islands north of Luzon, using different levels of simplification from 0 to 5. Even changing from level 0 to level 1 simplification almost halves the number of nodes in a way. So I would suggest using level 0, and if simplification is required, then this can be achieved using JOSM's simplification routine. -- |-|--| | __.-._ |Ohhh. Great warrior. Wars not make one great. -Yoda | | '-._7' |Freedom is still the most radical idea of all -N.Branden| | /'.-c |Linux registered user #402901, http://counter.li.org/ | | | /T |http://esambale.wikispaces.com| | _)_/LI |-|--| ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] Correcting Philippine coastlines
Mike, The objective is to import island names as nodes, e.g. place=island, name=xyz - i.e. just nodes not coastline ways with island name attached. Yes just island and islet node names for now. And is there any extra info or edits in gnet_islands_ph.zip ? Not much, I suggest you download directly from GNS serevr, the zip file is about a year old. I know for example that the GNS coordinates are very course so names for small islands (less than 2km across) may not be accurately placed. We can edi them further. Thanks again, please join us here @ talk-ph cheers, maning Mike At 10:30 AM 19/09/2008, maning sambale wrote: Content-Transfer-Encoding: 7bit Content-Disposition: inline On Fri, Sep 19, 2008 at 3:26 PM, Ian Haylock [EMAIL PROTECTED] wrote: Hi, I think the coastline from Manila to the part of Cavite should be ok, as I've been editing this area. I noticed last year that Boracay had been done, as well as some of the Island to the south of Boracay. Spotting coastline that needs updating should be fairly easy by examining the area using the slippy map, srtm coastlines usually have the horrible step like appearance. It would be nice to add the names to the islands as they are updated, but as I don't know what they are, do you know of a source where I can find out ? I'm sending you a zip file containing all the island/islet names for the Philippines from GNS (http://earth-info.nga.mil/gns/html/index.html). Data is in public domain, hence, no licensing issues. I converted the data to shapefile years ago. This is the same data source where Mike Collinson (cc'd here) made the data Municipalities/Cities name import. Mike can you help us out again in importing island names this time? Now I remember why I hated fixing the coastline before, you spend 5 minutes editing, and 20 minutes waiting for the upload to finish. OSM database seems to be better now, don't you think? And the Philippines even getting better :) cheers, maning Cheers, Ian --- On Fri, 19/9/08, maning sambale [EMAIL PROTECTED] wrote: From: maning sambale [EMAIL PROTECTED] Subject: Re: [talk-ph] Correcting Philippine coastlines To: talk-ph@openstreetmap.org Date: Friday, 19 September, 2008, 7:32 AM The script coast_josm.pl produces the same output, as the code used on the web page is based on the coast_josm.pl script. I think using either of the above methods would be a lot quicker than tracing all the coastline by hand, and produce a pretty accurate coastline. I've uploaded the data for the island, here's a link to the area : http://www.informationfreeway.org/?lat=19.318031414701732lon=121.45548518653908zoom=12layers=B000F000F Calayan Island! Home of the endemic newly discovered bird Calayan Rail. Yeah that looks nice. Please update as many islands as you can. We just need to be careful with uploading large areas. We might break into other contributor's work. AFAIK, metro manila coast has been edited already from Yahoo!, so the PGS would be useless there, as well as in Davao. cheers, maning I'll delete the original coastline, and fix the new one when you've had a look. Cheers, Ian --- On Fri, 19/9/08, maning sambale [EMAIL PROTECTED] wrote: From: maning sambale [EMAIL PROTECTED] Subject: Re: [talk-ph] Correcting Philippine coastlines To: talk-ph@openstreetmap.org Date: Friday, 19 September, 2008, 2:09 AM Thanks for the lakewalker tip! I didn't get it to work before, but now it's working quite fine for the lakes I'm currently processing On Thu, Sep 18, 2008 at 9:19 PM, Ian Haylock [EMAIL PROTECTED] wrote: Hi, also just remembered when I was fixing the coastlines last year, some of it was much better quality than the srtm coastline as it used the Almien Coastlines script. http://wiki.openstreetmap.org/index.php/Almien_coastlines_(PGS)#Identifying_coastline_data I was hoping someone would finish uploading all the coastline. Don't know if the reason it hasn't been, is because the data doesn't cover the whole of the Philippines . It actually has complete coverage for the Philippines, give a few incomplete segments. If we want to continue importing them, we need to inventory which areas of the SRTM coastline are already edited in detail. From experience, the PGS coastline has a couple of errors and manual edits are still needed. The source of the PGS coastline by the way is also Landsat images. Feel free to test import in some area and lets see how it goes in terms of efficient workflow and effort. cheers, maning Cheers, Ian --- On Thu, 18/9/08, maning sambale [EMAIL PROTECTED] wrote: From: maning sambale [EMAIL PROTECTED] Subject: [talk-ph] Correcting Philippine coastlines To: talk-ph@openstreetmap.org Date: Thursday, 18 September, 2008, 2:05 AM Hi
Re: [talk-ph] Correcting Philippine coastlines
Currently uploading major lakes and dams using the tag natural=water For a list of please see: http://wiki.openstreetmap.org/index.php/OSM_Philippines_Data_Import#Lakes_and_Dams cheers, maning On Fri, Sep 19, 2008 at 9:09 AM, maning sambale [EMAIL PROTECTED] wrote: Thanks for the lakewalker tip! I didn't get it to work before, but now it's working quite fine for the lakes I'm currently processing On Thu, Sep 18, 2008 at 9:19 PM, Ian Haylock [EMAIL PROTECTED] wrote: Hi, also just remembered when I was fixing the coastlines last year, some of it was much better quality than the srtm coastline as it used the Almien Coastlines script. http://wiki.openstreetmap.org/index.php/Almien_coastlines_(PGS)#Identifying_coastline_data I was hoping someone would finish uploading all the coastline. Don't know if the reason it hasn't been, is because the data doesn't cover the whole of the Philippines . It actually has complete coverage for the Philippines, give a few incomplete segments. If we want to continue importing them, we need to inventory which areas of the SRTM coastline are already edited in detail. From experience, the PGS coastline has a couple of errors and manual edits are still needed. The source of the PGS coastline by the way is also Landsat images. Feel free to test import in some area and lets see how it goes in terms of efficient workflow and effort. cheers, maning Cheers, Ian --- On Thu, 18/9/08, maning sambale [EMAIL PROTECTED] wrote: From: maning sambale [EMAIL PROTECTED] Subject: [talk-ph] Correcting Philippine coastlines To: talk-ph@openstreetmap.org Date: Thursday, 18 September, 2008, 2:05 AM Hi, I am documenting my progress in editing island coastlines. Please add more in the list. We have more then 7,100 to correct :) http://wiki.openstreetmap.org/index.php/OSM_Philippines_Data_Import#Coastline_Corrections cheers, maning -- |-|--| | __.-._ |Ohhh. Great warrior. Wars not make one great. -Yoda | | '-._7' |Freedom is still the most radical idea of all -N.Branden| | /'.-c |Linux registered user #402901, http://counter.li.org/ | | | /T |http://esambale.wikispaces.com| | _)_/LI |-|--| ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph -- |-|--| | __.-._ |Ohhh. Great warrior. Wars not make one great. -Yoda | | '-._7' |Freedom is still the most radical idea of all -N.Branden| | /'.-c |Linux registered user #402901, http://counter.li.org/ | | | /T |http://esambale.wikispaces.com| | _)_/LI |-|--| -- |-|--| | __.-._ |Ohhh. Great warrior. Wars not make one great. -Yoda | | '-._7' |Freedom is still the most radical idea of all -N.Branden| | /'.-c |Linux registered user #402901, http://counter.li.org/ | | | /T |http://esambale.wikispaces.com| | _)_/LI |-|--| ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
