Hallo all,

Here are two basic rankings of HOT project activity in the last year, based on 
map contributions in the past 12 months. Discussion on IRC suggested that this 
data might be useful to others, so I’m sharing it with the list. 

HOT projects ranked by edit activity from Mar 2014 - Feb 2015 (inclusive):
https://docs.google.com/spreadsheets/d/12TjMDsgPoEQadiUWbpKjotTMYKPo5NY4W7EDipHnE7Y/edit?usp=sharing

The first tab shows a ranking of all tasking manager projects by number of 
changesets, the second by number of contributors.

This data is not yet captured by the tasking manager: I’m only looking at 
participation that actually resulted in changes on the map. To this purpose I 
identify changesets in the OSM edit history that were tagged with a HOT project 
id.

I’m curious what other people can read from this data, e.g. whether it matches 
your intuitions of popular HOT activities.

Of course these kinds of rankings are of dubious utility — projects are rarely 
directly comparable in their scope, and larger activations may be structured in 
all kinds of ways. Same goes for changesets as a metric.

Does anyone have good suggestions for how one could meaningfully group the 
hundreds of HOT projects? E.g. I could aggregate stats for all 
#MissingMaps/#MapLesotho/Ebola Outbreak projects, are there similar tags I 
should be looking for? Are these actually meaningful distinctions when looking 
at contribution outcomes?

Any requests for other stats? I’d be happy to produce more, provided it’s 
feasible. No promises :)


Greetings from London,
Martin Dittus

---

If you’re interested in the details — there are a number of challenges in 
producing such data, and some caveats. Mostly it has to do with the 
unstructured nature of changeset comments.

I’m likely undercounting: automated iD changeset comments were only introduced 
in mid-August 2014, see http://www.openstreetmap.org/user/mcld/diary/24123 — 
I’m not identifying earlier contributions that have not been tagged manually.

I’m likely undercounting: HOT projects use multiple tagging conventions for 
changeset comments, most prominently #hotosm-project-938 and #hotosm-task-907 
but also #hotosm-Ebola-892 and similar. I'm being quite lenient in what I 
expect but may not catch all projects. 

I also noticed the tag #hotosm-cap103 which is not actually referring to a 
project ID, that's an activation ("Projet Cap103”).

And — I don’t have project titles for projects that aren’t public any longer.


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