[HOT] HOT/HDM web rendering

[Severin MENARD]

Hi Eric,

Some comments inline below.

>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 22 Jun 2013 22:53:16 +0200
> From: Eric SIBERT <courrier at eric.sibert.fr>
> To: hot at openstreetmap.org
> Subject: Re: [HOT] HOT/HDM web rendering
> Message-ID: <51C60EBC.506 at eric.sibert.fr>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi all,
>
>  > It's time to introduce the work being done on a humanitarian (HDM)
>  > specific rendering.
>  >
>  > TL;DR: http://umap.fluv.io/en/map/hdm-first-draft_728
>
> It is a pleasure to discover this work.
>
> So, i decided to have a close look at the HDM. And also compare to the
> MDM (my Madagascar Data Model :-p ) that I just updated:
>
>
http://wiki.openstreetmap.org/wiki/FR:WikiProject_Madagascar#.C3.89l.C3.A9ments_courants.2C_sp.C3.A9cifiques_ou_utiles_.C3.A0_Madagascar
>
> I'm a little bit surprise by the large number of elements in the HDM. I
> was expecting it to focus on specific aspects of humanitarian.
> golf_course? motorcycle parking? pub, biergarten, brothel... More
> generally, with JOSM presets, I don't understand the need to duplicate
> objects that already exists in default presets.

Indeed, it is quite detailed and could called HDDM for Humanitarian and
Development Data Model. For Development purposes, JOSM defaut presets are
just quite limited. There are many activities existing in the Developing
Countries that are absent in these presets, and other tags (eg office=*)
scarcely present.


>
>
> Concerning the roads:
> - for smoothness, you define it as other or under 40 km/h. It's not in
> accordance with wiki which is talking about the kind of vehicle that may
> use the road.
> - but you also added practicability:*=. There was already attempts to
> define smoothness or whatever for different type of vehicle. Maybe, we
> have to try again.


OSM wiki has his logic here we are dealing with hunanitarian field and this
speed limit is a feature used among logistics hum org (especially WFP) for
years so it makes sense to include it. We can add a paragraph explaining
this in the OSM wiki.


> In Madagascar, for path (or damaged road), they also use wheelbarrows to
> carry goods. I don't know how to indicate it. practicability:wheelbarrow=?


Why not to add it on a pure OSM perspective. i might be wrong but I think
humanitarian responders using wheelbarrow for deliveries are not very
numerous.


> - one can also conditional restrictions:
> smoothness=horrible
> smoothness:conditional=very_horrible @ Dec-Apr
Tipically the things we tried to avoid as this interpretation can highly
vary between people.surveying.
> i.e. 4wd from May to November and "charrette ? z?bu" from December to
April.
> - I'm also using seasonal=yes(/no) in conjunction with
> access:conditional=no @ Dec-Apr for instance to indicate that the road
> is seasonal and that it is usually closed from December to April. I
> would appreciate to see at least the seasonal aspect on rendering (color
> is already used for surface, shape for smoothness...).


I let this to Yohan but as he said the more we have info on a object the
more it creates noise


>
> For river crossing, I'm using two cases.
> - if the road is usually flooded: ford=yes
> - if the road is usually dry: flood_prone=yes
> Indicating the surface is also important. After a cyclone, it should be
> easier to cross a river if the corresponding part of the road is made of
> concrete instead of ground.
> It is interesting to see river crossing in render even more important
> than bridges. By a quick look at the map, you may answer questions like:
> how many rivers to cross?
Good point, and not complicated to render.
>
> Where is dispensary?
> Also, in the "Proposed features/Healthcare 2.0", it is not easy to see
> the limit between health_facility:type dispensary and health_centre.


This project seems to have been made by Fabi2, did not know it yet. Might
be interesting to try to merge.
>
>
> Eric
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