Hmm, as a French, I surely know what a talus is. However, I don't think the man_made key would fit all of them. While surveying, are to say if they are natural or man made. To my knowledge, a 'talus' can also have 2 sides, like a small but elongated hill. Yves
Le 23 novembre 2017 20:30:46 GMT+01:00, "André Pirard" <a.pirard.pa...@gmail.com> a écrit : >On 2017-11-23 17:26, joost schouppe wrote: >> 2017-11-23 16:48 GMT+01:00 André Pirard <a.pirard.pa...@gmail.com >> <mailto:a.pirard.pa...@gmail.com>>: >> >> Hi, >> >> I'm looking for how to map what is called in French a talus >> <http://www.cnrtl.fr/definition/talus> (Google's translation). >> I would call this a 1.8m simple step running for some reason for >> several 100s meters across meadows. >> Steep slope. There are "top of slope" and "bottom of slope" >lines. >> Rest is perfectly flat either side. >> It might be the remnants of a old canal's bank whose other side >> would have been eroded by the often overflowing nearby river. >> A "talus" made of plain ground is often frequent at one side of a >> path or track. >> According to the wiki, it's not a "scree" nor a "shingle". It's >> much less matter specific. >> So what? >> I'll use "scree" unless/until I hear of better for a French >talus. >> >> Cheers >> >> André. >> >> I'm not entirely sure this is what you have in mind, but in the cases >> where it is associated with roads, I've seen historic=hollow_way >(when >> the slope is caused by the fact that there's an old road), and >> "embankment" or "cutting" when the slope is deliberatly constructed. >> In other cases, I've seen what I think you describe mapped as >> natural=cliff, which is obviously wrong, but does get the message >> accross. For example where sand or rock was quarried this is common >to >> see on the map. I'm hoping someone has seen better ideas. >Thanks for all your fast answers from which I had to choose the first >one to reply to. >A photo was asked. I might go back there to make one, but you wouldn't >see more that the surface of a meadow looking like this on a long >distance, at varying steepness and width. > _________ > / > / >________/ > >It can be seen on this map share ><http://geoportail.wallonie.be/walonmap#BBOX=233801.45736786586,233864.69291100363,138369.75440413086,138396.60966617474#SHARE=5EAB0363BC0C4A92E053D0AFA49D3CB8>, >pan it to the left and right. >The two striped, faint lines are the upper and lower edges (rims, >levels) from the BE SPW(allonie) PICC numerical imagery ><wms:http://geoservices.wallonie.be/arcgis/services/TOPOGRAPHIE/PICC_VDIFF/MapServer/WmsServer?SERVICE=WMS&VERSION=1.1.1&FORMAT=image/png8&TRANSPARENT=TRUE&REQUEST=GetMap&STYLES=&SRS=%7Bproj%7D&WIDTH=%7Bwidth%7D&HEIGHT=%7Bheight%7D&BBOX=%7Bbbox%7D&LAYERS=0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29> >(JOSM) overlay allowing me to map it. As you zoom out, you will see >that >the aerial photo is darker along that line. >The Cartoweb background (Fond de Plan) draws it as the typical "behind >which to hide" line of old military maps. >Well, in OSM parlance, it's not a cree because there is no cliff (1), >not a shingle because there is no sea and not an embankment because >there is no road to be an attribute of. >Well, as I said it, what I'm facing seems to be, as I found more >specifically, the remnants of this old canal @ N°12 ><https://fr.wikipedia.org/wiki/Projet_de_canal_Meuse_et_Moselle#N.C2.B012_Devant_Rosi.C3.A8res>. >The river often overflows as high as above the road. When the water >goes >back, it washes the left bank of the canal towards the river but the >right bank is mostly just overflown. > >So, there's nothing in OSM for that precisely. >Would man_made=dyke be the most resembling and acceptable with an >explanation note? > >Thanks and TIA, >Cheers > >André. > > >(1) there's a very beautiful one, but at the other side of the river, >called "La Roche aux Faucons" (Falcons' Cliff).
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