An interesting thread - I work for a national mapping agency and we collate
vector data from all over the world. My personal view is that a vector
database can either be consistent or complete and, when over certain size,
is rarely both. We run complex validation post-compilation across millions
o
in every case? Points might suffice initially in
> the interests of simplicity/expediency; building footprints could be added
> later for specific cases. The initial point could have attributes as to
> size, type of building, etc.
>
> Cheers . . . . Spring Harriso
i was in san francisco at FOSS4G in March and there was a LOT of talk about
opendronemap and the tools developed under open source to create good
quality georeferenced imagery. thecost of drones has plummeted in the last
couple of years and is now available in large quantitities to mainstream
users
I did quick comparison just using names from the distance calculator from
kathmandu (results below) but now moved onto checking using the smaller
network diagram. this lets you concentrate on areas which are in the
current task manager tasks. Just finishd Task 6 last night and they look
pretty good
and wrote:
> Great
>
> From your table, I see many significative differences. Taking shorter
> segments would help to validate further I think.
>
> cheers
>
>
> Pierre
>
> --
> *De :* kusala nine
> *À :* hot
> *Envoyé
st of task 5 is outside the area of the network map)... Hope this
helps. I will also keep digitising roads in task 6 according to these
results.
Jon.
On Tue, Apr 28, 2015 at 11:11 AM, kusala nine
wrote:
> I agree - a good methodology is to use the smaller tree diagram to
> validate in d
etar, tamakosi, ramechhap]
naubise galchhi 22 (23) - galchhi = gardo khola
galchhi malekhu 20 (22)
malekhu mugling 40 (37)
On Tue, Apr 28, 2015 at 1:22 PM, kusala nine wrote:
> Hi - just a bit more info on the validation on roads. I concentrated on
> Task 6 and got the following results fro
An interesting observation here. during this time HOT is experiencing a
large expansion of activity and our strength will be how we learn and adapt
will be our strength for the future. At some point in the future we should
go through all our email trails and mine the experiences people have had to
this is all working now from the instructions. Difficult to see some areas
for e.g building damage. I'm using Bing as a pre-quake layer to contrast
the two (with data turned off), that way the contrasts (i.e tents, IDP and
damage) are easier to see. wow...
jon.
On Fri, May 1, 2015 at 6:28 PM, Pie
I noticed one of these too in the region of Gorkha. Maybe someone has bulk
uploaded hospital locations and some are incorrect or imprecise. I deleted
one when doing #1024 as it was in the middle of nowhere... Maybe worth
extracting and validating them as a one-off job. I seem to remember seeing
an
179 | 16
128 | 15
82 | 18
72 | 19
* 58 | 3*
On Mon, May 4, 2015 at 10:23 PM, kusala nine 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 ex
;ve finished
user options. Might be useful to identify tiles where buildings aren't
square. Needs overpass and pygeo to get data and work out distances. jon.
On Tue, May 5, 2015 at 7:05 AM, kusala nine wrote:
> I put the latest extract back into a database last night and extracted
> just t
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