On Tue, 04 Nov 2014 20:59:57 +0000 Michel Gilbert <michc...@gmail.com> wrote:
> Hi Ian, > > I found this page: > http://wiki.openstreetmap.org/wiki/User:Bgirardot/West_African_HOT_Mapping_Tips > that is created by BGirardot that provides good tips helping to > understand the context for mapping West Africa in terms of features. > > As an uninitiated HOT mappers I would need more of these. > > Michel It seems an obvious suggestion that a link to the page above could appear on the page which some of the Instructions are linking to: https://wiki.openstreetmap.org/wiki/2014_West_Africa_Ebola_Response Obviously BGirardot's brain is not automatically hooked to all the wiki pages it should be hooked up with, more's the pity. :-) And this whole discussion could tie into the thread on the list: "Video that Best Represents Our Work?" This thread seems to end up discussing ways to use video to help teach mappers how to do better mapping. This may be a good time for a straw-man catalog/training tool to appear on the wiki. - ray > On Tue Nov 04 2014 at 1:27:33 PM <thatwo...@hushmail.com> wrote: > > > > > > > > > I agree wholeheartedly with Ray. It would be very helpful to have a > > page of examples of W. Africa satellite imagery showing, 1) > > buildings that are often overlooked by mappers, especially the less > > experienced ones, because they may not look like buildings to the > > uninitiated, and; 2) things that are often mistaken for buildings, > > but aren't. This catalog could be even more useful if further > > broken down by areas/countries whose structures differ somewhat, as > > well as by typical rural vs urban structures. > > > > If s/he has neither visited these countries nor studied their > > cultures, a mapper's working at a distinct disadvantage without > > such examples. I've spent some time looking at photos online of > > traditional buildings in this part of the world to try to improve > > my mapping, but these shots are taken from ground level, of course. > > And as Ray points out, it's a completely different experience when > > viewing them from a satellite's POV. > > > > -Ian > > > > > > On 11/4/2014 at 3:03 AM, "Ray Kiddy" <r...@ganymede.org> wrote: > > > > On Tue, 4 Nov 2014 09:51:54 +0100 > > Claire Halleux <claire.hall...@hotosm.org> wrote: > > > > > Hi Ray, > > > > > > For cassava, you could add something on the following page I > > > guess: > > > https://wiki.openstreetmap.org/w/index.php?title=Tag:crop%3Dcassava > > > > > > If you intend to use a screenshot of imagery, make sure you keep > > > the copyright visible. We got permissions to do so from MapBox, > > > HIU and Bing, for training purposes. > > > > > > Cheers > > > > > > Claire > > > > > > > I am not explaining myself well. The page you are pointing to has a > > picture of casava taken from the ground. This does not help me > > identify anything if I am looking at casava in a photo taken from a > > satellite. > > > > How does one recognize a mound of casava in Liberia? Or a yurt in > > Mongolia? Or a well in Pakinstan? From satellite imagery? Does a > > well in Pakistan look like well in Montana? Probably not. So, when > > one has no experience with an area of the world, how can one > > identify its structures? One way is to look at a bunch of satellite > > imagery and keep asking questions, over and over. Or, perhaps > > pictures of differently shaped structures can be pulled out which > > identifies different structures and describes where they appear. > > Like a catalog. > > > > So, is there some catalog of satellite imagery that will show what > > things look like in various places, for training purposes? Or would > > there be suggestions on how to create one and where it could be? > > > > thanx - ray > > > > > > > > On Tue, Nov 4, 2014 at 2:58 AM, Ray Kiddy <r...@ganymede.org> > > > wrote: > > > > > > > On Tue, 4 Nov 2014 09:16:50 +0800 > > > > maning sambale <emmanuel.samb...@gmail.com> wrote: > > > > > > > > > To me, it looks like building=construction (the dividing > > > > > walls are visible). Nearly the same as what I've seen on the > > > > > ground in Malawi, Africa. > > > > > If you're unsure, just tag it as building=yes. > > > > > > > > Is there a place on a wiki to place pictures that can be > > > > examined to learn to recognize some of the local structures? A > > > > catalog that shows how different things appear in different > > > > places? > > > > > > > > I have had similar questions. I had a pic and the round > > > > honeycomb looking things were identified as casava plants > > > > growing in bunches in Liberia. Is there a logical place on one > > > > of the wikis, a sort of image catalog, where I could add this > > > > pic and mark it with "Casava plant, Liberia, resolution of > > > > image = x"? > > > > > > > > I was editing in "#479 Tharparkar Drought, Sindh, Pakistan", and > > > > some of this stuff could have been on the moon. I just have no > > > > context to figure out the shapes of houses, what wells look like > > > > (just like houses?) and so on. > > > > > > > > A catalog of the structure types one might find in, for > > > > example, the deserts of Pakistan might be helpful. > > > > > > > > We could me mapping in Mongolia and I am also not going to know > > > > what a yurt looks like from above. Same thing. > > > > > > > > I went to the wiki and did a search, for example, on Pakistan > > > > and got back, as you might expect, the page on Pakistan. This > > > > page does not show me, however, how the different types of > > > > houses there may appear in imagery. > > > > > > > > I can, of course, start something, and will. I just wanted to > > > > see if there are suggestions from you all first. > > > > > > > > thanx - ray > > > > > > > > > > > > > On Tue, Nov 4, 2014 at 8:41 AM, Warren Roberts > > > > > <gisteac...@gmail.com> wrote: > > > > > > > > > > > > > > > > > Does anyone have an idea if these are walls for building > > > > > > (without roof) .. there are many and in Sierra Leone. Wanted > > > > > > to identify them ether to digitize them as buildings. Thanks > > > > > > > > > > > > [image: --] > > > > > > > > > > > > Warren Roberts > > > > _______________________________________________ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
