[HOT] Mapswipe - whats happening with the data?

Jo winfixit at gmail.com
Sun Mar 26 16:27:52 UTC 2017


Hi John,

Both possibilities exist. You can 'reserve' a bunch of tile to work on
while off line, or you can work online.

It's easy to install it and play with it.

Polyglot

2017-03-26 18:23 GMT+02:00 john whelan <jwhelan0112 at gmail.com>:

> So what you're saying is it can scan about as fast as JOSM using
> <crtl><down arrow>.  Does it require an online connection or can it
> precharge so someone can do it on the bus and upload the results when it
> gets near WiFi?
>
> Thanks John
>
> On 26 March 2017 at 12:05, Pete Masters <pedrito1414 at googlemail.com>
> wrote:
>
>> Hi all, late to the party, but here are my two cents...
>>
>> MapSwipe, anecdotally for now, does save mappers' time. In an area where
>> little OSM data exists, it can target mappers' efforts where people (or
>> roads or rivers) exist. In the kind of rural landscapes we deal with a lot
>> in MSF areas of interest, this cuts down the amount of time spent
>> 'scanning' for stuff to map significantly. And, MapSwipe users can get
>> through a large area super fast.
>>
>> In the Sierra Leone projects we used it slightly differently. We knew
>> that Kenema district had been partly mapped through several other
>> initiatives (Ebola mapping  and the American Red Cross West Africa project
>> for example). We wanted comprehensive data in OSM, so we tasked the area in
>> MapSwipe and cross referenced the results with existing OSM data. Where
>> MapSwipers said 'yes, there is a building' but none existed in OSM the area
>> would be tasked for mapping. Where MapSwipers said 'yes, there is a
>> building' and building data existed in OSM, we discounted the area from the
>> tasking. Meaning that mappers were applying affords only where there were
>> gaps in the data.
>>
>> I hope that is of interest. Couple of related points...
>>
>> Each area is classified by three different users in MapSwipe, not four.
>>
>> Paul Stewart wrote up the process for using Mapswipe to deduplicate
>> mapping efforts through the tasking manager
>> http://www.openstreetmap.org/user/pjstewart1984/diary/40710
>>
>> Disastermappers write here about how to access MapSwipe data and how they
>> process it https://disastermappers.wordpress.com/2016/11/16/integrating
>> -mapswipe-and-hot-tasking-manager-first-task-online/
>>
>> HOT Summit presentation on MapSwipe and pybossa
>> https://youtu.be/pRZ_mWn0Lmc
>>
>> Cheers,
>>
>> Pete
>>
>>
>>
>>
>>
>> On 26 Mar 2017 15:47, "Jo" <winfixit at gmail.com> wrote:
>>
>>> It's definitely useful to save actual mapper's time. For validation I'm
>>> not sure it would be a big help.
>>>
>>> Op 26 mrt. 2017 3:12 p.m. schreef "john whelan" <jwhelan0112 at gmail.com>:
>>>
>>>> Would we be better ahead by using something like mapswipe to validate?
>>>> If a tile is OK there is no need to add to the map from the tool.  If three
>>>> mappers tick it then I would say its good to go.
>>>>
>>>> The current system we use four mappers to mapswipe, then a conventional
>>>> mapper to map followed by a validator.  Six passes to get a validated
>>>> tile.  The other way would give you one in four passes three of which would
>>>> be on smartphones.
>>>>
>>>> Cheerio John
>>>>
>>>> On 26 March 2017 at 09:01, john whelan <jwhelan0112 at gmail.com> wrote:
>>>>
>>>>> But does it address the concern about how much effort is expended
>>>>> compared to the value added?
>>>>>
>>>>> Cheerio John
>>>>>
>>>>> On 26 March 2017 at 08:44, Ralf Stephan <gtrwst9 at gmail.com> wrote:
>>>>>
>>>>>> Search is your friend. Searching for Mapswipe yields eg
>>>>>> http://tasks.hotosm.org/project/2521
>>>>>> where clearly the tiles are preselected. Also the description: "The
>>>>>> data are prepared by MapSwipe"
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> On Sun, Mar 26, 2017 at 2:40 PM john whelan <jwhelan0112 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> I seem to recall the same area is mapswiped by four different people
>>>>>>> before a mapper maps it.
>>>>>>>
>>>>>>> Other than the size of the tile or which area to give priority to I
>>>>>>> think the advantage is that people can do it anywhere on a smartphone.
>>>>>>>
>>>>>>> I would hesitate to say if it is worth doing or not.  In future
>>>>>>> there might be a way to bring something into OSM via a review process.
>>>>>>>
>>>>>>> Cheerio John
>>>>>>>
>>>>>>> On 26 March 2017 at 08:22, Hakuch <hakuch at posteo.de> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 26.03.2017 14:13, john whelan wrote:
>>>>>>> > My understanding is that mapswipe is only used to identify where
>>>>>>> to map.
>>>>>>> > Not to contribute to the map.
>>>>>>> >
>>>>>>> > Cheerio John
>>>>>>>
>>>>>>> of course there is no data transmitted to OSM, but how is the data (I
>>>>>>> mean, marked tiles) used after I transmitted it? How much is it
>>>>>>> worth to
>>>>>>> do that mapswiping?
>>>>>>>
>>>>>>>
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>>>>>>>
>>>>>>
>>>>>
>>>>
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