[OSM-NI] Área en RAAN

Jaakko Helleranta jaakko en helleranta.com
Mar Abr 28 03:40:57 UTC 2015


Hola Rodrigo y tod at s,

There are a few possible reasons for symmetrical edits on such scale :

1) The shapes reflect a physical reality on the ground
= Not the case here.

2) The data available that has been used for mapping the area is limited in
a geometrically symmetric way and that defines the mapping result. This can
be due to at least
2.1) Imported data shapes
= Unlikely here unless there has, in fact, been an import (that I just
haven't heard of). So, possible but I'm assuming that this is not the case
here.
2.2) For map data created with imagery (like it seems is quite possibly the
case here) the imagery used has limits (such as high resolution bounds)
that then have limited the mapping outcome.
= This seems like a plausible reason here (without looking at the edit
history of the data in question).

Finally,
3) The area has been mapped using some sort of geographically sliced
(=restricted) mapping (coordination) tool.
=> As I have set up at least one HOT Tasking Manager job for this area
(which is visible for the whole world, BTW) and as the task has also been
shared here and at Bilwi (when Felix and Porfirio were there with Unicef)
it's really quite possible that this is the story behind this data.

It's of course also possible that the reason is a combination of the above
- or something else.

Perhaps the best way to try to figure the real story behind any edits is to
check out the history of the data in question [1] and to contact (at least
some of) the mapper(s) who have created the data in question.

Saludos,
-Jaakko

[1] Checking the history of data is easiest in JOSM. Just download data for
an area. Select an object you want to research the history of and then
simply hit Ctrl+H (as in History). You'll get a popup window with the full
history of the object. The default tab shows the edit history of the tags
of the object and the other tab shows the nodes that have been part of the
object (if its a way=line object). To visualize things you need to use a
service that does it. I can look one up if someone is interested.

--
Sent from my mobile device.
On Apr 27, 2015 8:56 PM, "Rodrigo Rodríguez" <roirobo at ubuntu.org.ni> wrote:

> Hola,
>
> ¿Alguien sabe qué significa esta región verde tan cuadrada en
> http://www.openstreetmap.org/#map=10/13.7674/-84.0633&layers=N ? Me
> parece extraño que, de ser área de selva, esté delimitada de manera tan
> simétrica?
>
> Saludos,
>
> --
> Rodrigo Rodríguez
> http://mundonomada.info
> __
> Prohibido prohibir. La libertad empieza con una prohibición.
>
>
> _______________________________________________
> Talk-ni mailing list
> Talk-ni at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-ni
>
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