Thanks Jon,
Below is a link, your data brought me to look at. I see three buildings that
should not be on the map. Two are not orthogonal. And just east of these, there
is a building not traced.
https://www.openstreetmap.org/#map=19/27.996049/85.04349
Pierre
De : kusala nine <[email protected]>
À : Mhairi O'Hara <[email protected]>; hot <[email protected]>
Envoyé le : Mardi 12 mai 2015 16h46
Objet : Re: [HOT] Nepal data validation: overpass script to identify the
recent mappers?
bit of a delay getting non-squared buildings to work in python/overpass but the
day job intervened I'm afraid. Still, good to dive into learning overpass and
the pytthon API. The link below has a python script which will report buildings
within a bounding box with a skew greater than a certain tolerance. It's the
kind of thing which could be integrated into JOSM ideally but not sure how to
go about that... I'm happy to do the work (I speak java and python and would
like to get involved in the JOSM developments). Have a go - email me if it
doesn't work. Against the depressing backdrop of the 2nd earthquake this slips
down the priority list so I'm going back to the TM to do some bread and butter
mapping for a few days but happy to be diverted by this if it would help.
https://www.dropbox.com/s/xhlr6n1ia3kzqw6/buildings.zip?dl=0
all the best,
jon p.
On Tue, May 5, 2015 at 9:21 PM, Springfield Harrison <[email protected]>
wrote:
Wouldn't it be easier to just create a tool that draws abox/rectangle? That is
a common GIS drawing activity.
I'm new to this (but not to GIS/GPS mapping) but does this project reallyneed
building footprints in every case? Points might sufficeinitially in the
interests of simplicity/expediency; building footprintscould be added later for
specific cases. The initial point couldhave attributes as to size, type of
building, etc.
Cheers . . .. Spring Harrison
At 05-05-2015 13:04 Tuesday, kusala nine wrote:
I have a python script whichwill analyse all buildings in a bounding box and
output those with alarge "skew" - where the diagonals don't match (within
atolerance). It uses overpass API and will also output changeset/userinfo. I'll
post a link to it tomorrow once I've finished user options.Might be useful to
identify tiles where buildings aren't square. Needsoverpass and pygeo to get
data and work out distances. jon.
On Tue, May 5, 2015 at 7:05 AM, kusala nine<[email protected]> wrote:
- I put the latest extract back into a database last night andextracted
just the buildings and the number of sides in them - the listbelow shows total
number of buildings and the number of sides in thepolygon.. Of the 190k
buildings in the current Nepal extract the vastmajority have four sides - There
are 58 triangular buildings though! andquite a lot with more sides. I am
analysing the 4-sided buildings now andmeasuring the difference in metres
between the diagonals - this isprobably the best method of determing the skew.
If you want a shapefileof the triangular buildings let me know and I can
dropbox it. I'll tryand get this working in python/overpass wrapper so it can
be run as avalidation process... jon.
- total  | #sides
- Â 160852 | Â 4
- Â 10940 | Â 6
- Â Â 6259 | Â 5
- Â Â 5075 | Â 8
- Â Â 2404 | Â 7
- Â Â 1240 | 10
- Â Â 875 | Â 9
- Â Â 718 | 12
- Â Â 496 | 11
- Â Â 231 | 14
- Â Â 208 | 13
- Â Â 179 | 16
- Â Â 128 | 15
- Â Â Â 82 | 18
- Â Â Â 72 | 19
- Â Â Â 58 | Â 3
- On Mon, May 4, 2015 at 10:23 PM, kusala nine<[email protected]>
wrote:
- hi - will do. back to the day job tomorrow but will keep on
it.geometrically it's easy to figure out if something's got right angles -it's
just the extract from the database. I'll see what I can do andreport back. jon.
- On Mon, May 4, 2015 at 9:36 PM, Mhairi
O'Hara<[email protected]> wrote:
- This is great. We are really looking at somehow incorporating
atiered user system (beginner/intermediate/advanced) into the TaskingManager,
so that we can hopefully do the following:
- Mapper status: Provide various levels of mapper
status(beginner/intermediate/advanced), so that only advanced can validatetiles
and perhaps a buddy system can be introduced to guidebeginners.
- Chat room: Provide a channel where users (beginners) can speak
toother users (experienced) live to get help on how to do mapping.Something
similar to MapCraft(http://mapcraft.nanodesu.ru/)
- Beginner guidance: Once new mappers are identified,
perhapsexperienced users can give them view access to watch them map live.
Thiswould be the quickest way to teach and learn during an activation, as
itwould be specific to the project they are working on and enable them tobecome
familiar with identifying features in the satellite imagery.
- Again, duly noted! Please keep me in the loop if you make any
headway on the python wrapper Kusala.
- Kind regards,
- Mhairi
- On Mon, May 4, 2015 at 9:41 AM, Pierre
Béland<[email protected]>wrote:
- Working better :)
- Thanks
- Â
- Â
- Pierre
- De : Julian Haag<[email protected]>
- À :[email protected]
- Envoyé le : Lundi 4 mai 2015 9h05
- Objet : Re: [HOT] Nepal data validation: overpass script
toidentify the recent mappers?
- -----BEGIN PGP SIGNED MESSAGE-----
- Hash: SHA1
- Â
- Hi,
- there is a . athe the ent of the URL. This is the correct one:
- http://resultmaps.neis-one.org/newestosmcountry.php?c=Nepal
- ngt
- Am 04.05.2015 um 14:54 schrieb Pierre Béland:
- > Thanks Pascal Neis for this again. This includes a RSS feed.
Nouser listed yet on my screen.
- >Â
- >Â
- > Pierre
- >
- > -------------------------
- > *De :* amrit karmacharya<[email protected]>
- > *À :* Kusala9<[email protected]>
- > *Cc :*"[email protected]"<[email protected]>
- > *Envoyé le :* Lundi 4 mai 2015 8h41
- > *Objet :* Re: [HOT] Nepal data validation: overpass script
toidentify the recent mappers?
- >
- > This page shows Newest Active OpenStreetMap Contributors
forNepalhttp://resultmaps.neis-one.org/newestosmcountry.php?c=Nepal.
- >
- >
- >
- > On Mon, May 4, 2015 at 12:35 PM,
Kusala9<[email protected]<mailto:[email protected]>> wrote:
- >
- >Â Â Â Â I'm new to overpass but there s a nice python
wrapperwhich will make user counts and geometry calculations easier. I can
lookat this tonight and will report back. Jon
- >
- >Â Â Â Â 58683-23001#47
- >
- >Â Â Â Â On 4 May 2015, at 02:45, Severin
Menard<[email protected] <mailto:[email protected]>>wrote:
- >
- >Â Â Â Â > Hi,
- >Â Â Â Â >
- >Â Â Â Â > Is there a overpass skilled person to write
thescript that can identify mappers with limited experience (recent mapperID or
number of contributions less than let us say 5,000) over Nepal, sothat we can
check their contributions and give advice about how toimprove them.
- >Â Â Â Â >
- >Â Â Â Â > Another hero would be the person able to include
adetection of non squared buildings within the Validator steps.
- >Â Â Â Â >
- >Â Â Â Â > Sincerely,
- >Â Â Â Â >
- >Â Â Â Â > Severin
- >Â Â Â Â >_______________________________________________
- >Â Â Â Â > HOT mailing list
- >Â Â Â Â >[email protected]<mailto:[email protected]>
- >Â Â Â Â >https://lists.openstreetmap.org/listinfo/hot
- >
- >Â Â Â Â _______________________________________________
- >Â Â Â Â HOT mailing list
- >Â Â Â Â [email protected]<mailto:[email protected]>
- >Â Â Â Â https://lists.openstreetmap.org/listinfo/hot
- >
- >
- >
- >
- > --
- > Best Regards
- > Amrit Karmacharya
- > Instructor, Survey Officer
- > Land Management Training Center
- >
- > _______________________________________________
- > HOT mailing list
- > [email protected]<mailto:[email protected]>
- >https://lists.openstreetmap.org/listinfo/hot
- >
- >
- >
- >
- > _______________________________________________
- > HOT mailing list
- >[email protected]
- >https://lists.openstreetmap.org/listinfo/hot
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- --
- Mhairi O'Hara
- Technical Project Manager
- Email:Â
[email protected]
- Indonesian Mobile:Â+62 822 4701 1475
- Humanitarian OpenStreetMap TeamÂ
- Using OpenStreetMapÂ
- for Humanitarian ResponseÂ
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