Re: [HOT] introduction
Theresa, kudos to you for the great work. I'd love to hear about the Meetup outcomes and if there were any lessons you the community would benefit from. Do you think there is room for organizing a similar event in Portland, OR? Thanks, On Mon, Nov 3, 2014 at 8:56 AM, Theresa Clary tcl...@workforcestrategies.com wrote: Hi Kate, Please allow me to introduce myself. Alex Chaucer at Skidmore referred me to you. I am here in Seattle getting ready to do a workshop on OpenStreetMap - humanitarian mapping. As you may have learned along the way, I have been giving workshops to try to increase the mapping contributors to the H.O.T. At one point it I thought you were in located in Portland, and if still there, I am reaching out to you now because I am in Seattle. So all said and done, somehow I would like to meet you via phone or in person. I am particularly interested in discussing your ideas on how you might assist me in getting some funding to continue giving the workshops, which at this point I am paying for myself. This week I will be giving two workshops in Seattle. Please feel free to let others know. And, I look forward to meeting you. Sincerely, Theresa Clary 413.281.6169 http://seattletimes.com/html/localnews/2024939753_ebolamapsxml.html ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot -- Simcha Levental Urban + Environmental Planner Geospatial Specialist M.A., Urban, Environment Policy and Planning, Tufts University Linked-in http://www.linkedin.com/in/leventalsimcha ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
[HOT] introduction
Hi Kate, Please allow me to introduce myself. Alex Chaucer at Skidmore referred me to you. I am here in Seattle getting ready to do a workshop on OpenStreetMap - humanitarian mapping. As you may have learned along the way, I have been giving workshops to try to increase the mapping contributors to the H.O.T. At one point it I thought you were in located in Portland, and if still there, I am reaching out to you now because I am in Seattle. So all said and done, somehow I would like to meet you via phone or in person. I am particularly interested in discussing your ideas on how you might assist me in getting some funding to continue giving the workshops, which at this point I am paying for myself. This week I will be giving two workshops in Seattle. Please feel free to let others know. And, I look forward to meeting you. Sincerely, Theresa Clary 413.281.6169 http://seattletimes.com/html/localnews/2024939753_ebolamapsxml.html ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] introduction
Hi, Theresa! If you're still in Seattle on Saturday, let me invite you to our Saturday Mapternoon ;-) meetup http://www.meetup.com/OpenStreetMap-Seattle/events/214692362/ where, coincidentally, we'll be doing HOT training (mixed in with other things). (Or maybe not coincidentally, given the ebola mapping needs.) -- Pat ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] Introduction
On Tue, Jul 8, 2014 at 1:09 AM, Severin Menard severin.men...@gmail.com wrote: Hi Alexander, On Mon, Jul 7, 2014 at 1:09 PM, Alexander W. Janssen alexander.jans...@gmail.com wrote: On Mon, Jul 7, 2014 at 10:43 AM, Dan S danstowell+...@gmail.com wrote: Hi Alex, Hi Dan! 1) Yes, sometimes it's frustratingly difficult with low-res imagery to know what you can contribute. I would say DEFINITELY carry on mapping those big waterways you mention. In my experience, when we're trying to map an unmapped area, having those landmarks in OSM's database (waterways, major roads, residential areas) really helps future mappers to have points of reference, even if they are approximate and need refining later. OK, will continue with that. 2) Re farmlands and forests: I sometimes draw these in, but not often. I agree with you that it seems helpful to give a rough picture of the landscape to expect, BUT on the other hand, I think having these polygons all over can sometimes make the more important jobs harder: jobs such as checking that every single building has been captured. And since these landuse polygons are pretty much never requested in the tasks (apart from landuse=residential which is often a crucial first step), it seems the locals and the aid organisations don't particularly need them. So I would suggest don't spend much time on those. Ah, allright. Well, I prioritize anyway; if I'm in the mood I'll just draw it anyway :-) I would say it depends on the situation. Eg in Khartoum (http://www.openstreetmap.org/#map=12/15.7493/32.5389) I found interesting to add the residential areas as well as the brownfields and farmlands around or inside. Brown-fields and farmlands rather than something left blank also say we did not miss a residential area. Good point. The green- and brownfield topic is interesting. I'm just comited to Sierra Leone tasks and I see a lot of areas which seem to be recently fire cleared. Is there a tag for that or should we assume that this is now greenfield as it will be either residential or farmland later? Alex. -- The best thing about procrastinating is you can do it NOW and ANYTIME. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
[HOT] Introduction
Hi, I'm new to this list and I wanted to give a shout and say Hello. I'm using OSM now for... uh, frankly, I don't remember, but I only started mapping a few years ago. I mostly do it in my vacations and create GPS-tracks during my hikes. Ever since I can't walk very good any more, I started to improve maps in my area - mostly in the suburbs where streets are correctly mapped, but houses and their addresses are missing. I just stumbled upon HOT; I immediately liked the idea and started working on some Ebola Outbreak tasks. That's also why I'm writing this email, I have a few questions. 1) Imagery isn't that good - at least not for most the tasks I was randomly assigned too - and I'm having a hard time finding the proper... quality expectation. When imagery is bad I try at least drawing big waterways (as areas/multipolygons) using Landsat or MapBox. I don't quite think that the actual result is that good. What is best practice here - do it anyway so that at least basic information is available or just leave it alone? 2) When I get assigned to a task which looks pretty complete when it comes to villages, houses, streets and the such, I draw farmlands and forests. From my point of view - when I go to remote areas - I like it when the map gives me a basic idea about how the landscape looks like. However, the validation process takes longer. Should I continue drawing these areas or just skip it? 3) Especially regarding the tasks Ebola Outbreak, Sierra Leone, Kailahun district: It says I should comment the changeset with source=DigitalGlobe/Mapbox - however, that imagery is either non existent or not that good - Landsat (and Spot, where available) give much better results. In JSOM I generally just say fetch sources from active layers. I guess I'm doing it right...? Thanks! Alex. (user yalla) -- The best thing about procrastinating is you can do it NOW and ANYTIME. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] Introduction
Hi Alex, Welcome to HOT! I stumbled upon HOT a bit like you did. My personal, non-authoritative perspective on your questions: 1) Yes, sometimes it's frustratingly difficult with low-res imagery to know what you can contribute. I would say DEFINITELY carry on mapping those big waterways you mention. In my experience, when we're trying to map an unmapped area, having those landmarks in OSM's database (waterways, major roads, residential areas) really helps future mappers to have points of reference, even if they are approximate and need refining later. 2) Re farmlands and forests: I sometimes draw these in, but not often. I agree with you that it seems helpful to give a rough picture of the landscape to expect, BUT on the other hand, I think having these polygons all over can sometimes make the more important jobs harder: jobs such as checking that every single building has been captured. And since these landuse polygons are pretty much never requested in the tasks (apart from landuse=residential which is often a crucial first step), it seems the locals and the aid organisations don't particularly need them. So I would suggest don't spend much time on those. If you see tasks which seem fairly complete, it might be a better use of your time to get yourself to a point where you feel confident enough to *validate* other people's completed squares. It takes a little while to feel confident about being a validator but we always need more validation effort than we get. 3) Firstly, you should indeed tag the changeset with the actual imagery you used. But secondly, if you're not careful about which imagery you use, there's a risk that you might end up tracing from imagery that is a couple of years old or something like that. My personal approach would be to try and use the recommended imagery, since someone has usually put effort in to working out which imagery is most appropriate. Also, there's usually a conversation on the mailing list which always gives some clues about what to use. Hope this helps - Best Dan 2014-07-07 9:24 GMT+01:00 Alexander W. Janssen alexander.jans...@gmail.com: Hi, I'm new to this list and I wanted to give a shout and say Hello. I'm using OSM now for... uh, frankly, I don't remember, but I only started mapping a few years ago. I mostly do it in my vacations and create GPS-tracks during my hikes. Ever since I can't walk very good any more, I started to improve maps in my area - mostly in the suburbs where streets are correctly mapped, but houses and their addresses are missing. I just stumbled upon HOT; I immediately liked the idea and started working on some Ebola Outbreak tasks. That's also why I'm writing this email, I have a few questions. 1) Imagery isn't that good - at least not for most the tasks I was randomly assigned too - and I'm having a hard time finding the proper... quality expectation. When imagery is bad I try at least drawing big waterways (as areas/multipolygons) using Landsat or MapBox. I don't quite think that the actual result is that good. What is best practice here - do it anyway so that at least basic information is available or just leave it alone? 2) When I get assigned to a task which looks pretty complete when it comes to villages, houses, streets and the such, I draw farmlands and forests. From my point of view - when I go to remote areas - I like it when the map gives me a basic idea about how the landscape looks like. However, the validation process takes longer. Should I continue drawing these areas or just skip it? 3) Especially regarding the tasks Ebola Outbreak, Sierra Leone, Kailahun district: It says I should comment the changeset with source=DigitalGlobe/Mapbox - however, that imagery is either non existent or not that good - Landsat (and Spot, where available) give much better results. In JSOM I generally just say fetch sources from active layers. I guess I'm doing it right...? Thanks! Alex. (user yalla) -- The best thing about procrastinating is you can do it NOW and ANYTIME. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] Introduction
On Mon, Jul 7, 2014 at 10:43 AM, Dan S danstowell+...@gmail.com wrote: Hi Alex, Hi Dan! 1) Yes, sometimes it's frustratingly difficult with low-res imagery to know what you can contribute. I would say DEFINITELY carry on mapping those big waterways you mention. In my experience, when we're trying to map an unmapped area, having those landmarks in OSM's database (waterways, major roads, residential areas) really helps future mappers to have points of reference, even if they are approximate and need refining later. OK, will continue with that. 2) Re farmlands and forests: I sometimes draw these in, but not often. I agree with you that it seems helpful to give a rough picture of the landscape to expect, BUT on the other hand, I think having these polygons all over can sometimes make the more important jobs harder: jobs such as checking that every single building has been captured. And since these landuse polygons are pretty much never requested in the tasks (apart from landuse=residential which is often a crucial first step), it seems the locals and the aid organisations don't particularly need them. So I would suggest don't spend much time on those. Ah, allright. Well, I prioritize anyway; if I'm in the mood I'll just draw it anyway :-) If you see tasks which seem fairly complete, it might be a better use of your time to get yourself to a point where you feel confident enough to *validate* other people's completed squares. It takes a little while to feel confident about being a validator but we always need more validation effort than we get. Good point; however, when it comes to the validating part, I know how hard that is in my area - especially when it comes to correct road relations and the such. There are still many grey areas, as soon as we run out of unaddressed areas, I'll look other the validation part. So that more skilled people can concentrate on that first. Also, Is there a feedback process in case I'm doing something wrong? I guess if I make a mistake, I'll do the same over and over again. Got the wiki in another tab open for reference at all times, but well, you know how it is. 3) Firstly, you should indeed tag the changeset with the actual imagery you used. I thought so. But secondly, if you're not careful about which imagery you use, there's a risk that you might end up tracing from imagery that is a couple of years old or something like that. Luckily Bing shows a date in JOSM and all of it shows 2014 up until now. My personal approach would be to try and use the recommended imagery, since someone has usually put effort in to working out which imagery is most appropriate. Also, there's usually a conversation on the mailing list which always gives some clues about what to use. I paid attention to this, however other people seem to have the same problem - MapBox/Digital Globe is not exactly high-res. In one occasion I could use Spot data, but that seems to be rare. I wonder if it'd be useful to use Sentinel 1-A data? It's free to use and available at ESA's Sentinel Data Hub. However, the 1-A satellite was just recently comissioned and the webinterface is a nightmare. Also, the data products aren't really curated yet, only level-1 products are really useful now and we're speaking about TIFF-blobs hundreds of Megabytes large. I think these would've to be split to tiles and zoom-levels first before they're really useful to JOSM. Information about ESA's Sentinel project: https://sentinel.esa.int/web/sentinel/home Sentinel Data hub: https://senthub.esa.int/ Regristration and usage is free. Dan Alex. -- The best thing about procrastinating is you can do it NOW and ANYTIME. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] Introduction
Hi Alexander, On Mon, Jul 7, 2014 at 1:09 PM, Alexander W. Janssen alexander.jans...@gmail.com wrote: On Mon, Jul 7, 2014 at 10:43 AM, Dan S danstowell+...@gmail.com wrote: Hi Alex, Hi Dan! 1) Yes, sometimes it's frustratingly difficult with low-res imagery to know what you can contribute. I would say DEFINITELY carry on mapping those big waterways you mention. In my experience, when we're trying to map an unmapped area, having those landmarks in OSM's database (waterways, major roads, residential areas) really helps future mappers to have points of reference, even if they are approximate and need refining later. OK, will continue with that. 2) Re farmlands and forests: I sometimes draw these in, but not often. I agree with you that it seems helpful to give a rough picture of the landscape to expect, BUT on the other hand, I think having these polygons all over can sometimes make the more important jobs harder: jobs such as checking that every single building has been captured. And since these landuse polygons are pretty much never requested in the tasks (apart from landuse=residential which is often a crucial first step), it seems the locals and the aid organisations don't particularly need them. So I would suggest don't spend much time on those. Ah, allright. Well, I prioritize anyway; if I'm in the mood I'll just draw it anyway :-) I would say it depends on the situation. Eg in Khartoum ( http://www.openstreetmap.org/#map=12/15.7493/32.5389) I found interesting to add the residential areas as well as the brownfields and farmlands around or inside. Brown-fields and farmlands rather than something left blank also say we did not miss a residential area. In Central African Republic, basically the residential areas are surrounded by farmlands then forest. Would be interesting to add the cultivated areas, but maybe through a remote sensing analysis as the extent will vary from a year to another and do not need to be extremely precise. If you see tasks which seem fairly complete, it might be a better use of your time to get yourself to a point where you feel confident enough to *validate* other people's completed squares. It takes a little while to feel confident about being a validator but we always need more validation effort than we get. Good point; however, when it comes to the validating part, I know how hard that is in my area - especially when it comes to correct road relations and the such. There are still many grey areas, as soon as we run out of unaddressed areas, I'll look other the validation part. So that more skilled people can concentrate on that first. Also, Is there a feedback process in case I'm doing something wrong? I guess if I make a mistake, I'll do the same over and over again. Got the wiki in another tab open for reference at all times, but well, you know how it is. 3) Firstly, you should indeed tag the changeset with the actual imagery you used. I thought so. But secondly, if you're not careful about which imagery you use, there's a risk that you might end up tracing from imagery that is a couple of years old or something like that. Luckily Bing shows a date in JOSM and all of it shows 2014 up until now. My personal approach would be to try and use the recommended imagery, since someone has usually put effort in to working out which imagery is most appropriate. Also, there's usually a conversation on the mailing list which always gives some clues about what to use. I paid attention to this, however other people seem to have the same problem - MapBox/Digital Globe is not exactly high-res. In one occasion I could use Spot data, but that seems to be rare. I wonder if it'd be useful to use Sentinel 1-A data? It's free to use and available at ESA's Sentinel Data Hub. However, the 1-A satellite was just recently comissioned and the webinterface is a nightmare. Also, the data products aren't really curated yet, only level-1 products are really useful now and we're speaking about TIFF-blobs hundreds of Megabytes large. I think these would've to be split to tiles and zoom-levels first before they're really useful to JOSM. Information about ESA's Sentinel project: https://sentinel.esa.int/web/sentinel/home Sentinel Data hub: https://senthub.esa.int/ Regristration and usage is free. Dan Alex. -- The best thing about procrastinating is you can do it NOW and ANYTIME. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
