this is a good descrption of crowmapping.
We have to move from unstructured info and gradually give more signification to
it. exchanging as we do this week helps progress.
That's part of the motivation to participate to this humanitarian community and
response.
cheers all.
Pierre
De : Jonathan Webb <[email protected]>
À : [email protected]
Envoyé le : Jeudi 30 avril 2015 11h58
Objet : Re: [HOT] AAAAAAAAAAAAAARRRRRRRRGH!
Thanks Nick,
Glad I pitched in - I nearly deleted my post as an outsider...
I have found and been pointed to (by you & others) a load of useful info -
there is not necessarily a shortage of info, just that it's in disparate places
& I think this is the key issue. In constructing this reply, I have found much
of what I need to know but each strand isn't quite complete in itself & you
need to find enough strands. Ideally all the info would be in one place, in a
coherent house style but that probably isn't possible. I could have a go at
that but I'd need a bit more mapping experience under my belt first.
Re your link - on the whole it is very helpful. First off, I would prefer the
font to be a tad larger as there is a lot of text & I'm pushing 50 (I saw
another older respondent as well so I'm not alone) & my eyes aren't what they
were.
What I haven't found is much about the value judgements in interpreting the
imagery for disaster purposes. Less of an issue for those with formal
GIS/remote sensing training probably. I think I am quite good at interpreting
aerial imagery, but my experience is English Landscape (character) and
heritage. This is very helpful:
http://wiki.openstreetmap.org/wiki/User:Bgirardot/West_African_HOT_Mapping_Tips
To me, it would seem important to know whether a track can take vehicles but I
do not feel qualified to guess at this - some tips on interpreting rural tracks
etc might be useful. This could be a valuable use of a small amount of time
for someone experienced in this, as it would enable newcomers like me to make a
more useful contribution.
In general terms, it would be helpful to have a concise "Executive Summary"
about the aims of HOT - in terms of map quality & accuracy (in metres) and
maybe some of the "woollier" aspects like whether it is OK to make an informed
but subjective guess etc.
I've just seen this
https://datameet.hackpad.com/Nepal-Earthquake-Mapping-YDjLauUK0Ek
which addresses a number of the issues I think, in that it is a user-friendly,
concise guide to resources. Good work by the authors!
It may be that there is just a lot to learn! To some extent I thought "I can
do GIS", I can do this, but in reality cartography is a discipline in its own
right & it is somewhat presumptious to assume that a layman can do it just
because they want to help (without any training): It might be useful to make
this point, in a friendly way to deter would-be mappers who come in & lock
squares but don't achieve much.
Hope I haven't waffled on too much - I've been exploring whilst I write this
and consequently my position has changed a bit. But newcomers still face the
task of finding the information strands.
Happy to help if I can
Regards
Jonathan
--
Jonathan Webb
Freelance GIS Specialist
07941 921905
http://www.jwebbgis.co.uk
http://uk.linkedin.com/in/jwebbgis
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