[OSM-talk] MapRoulette - cryptic tasks

[Blake Girardot]

For what it might be worth.

I know nothing about this map roulette project, but in reading the
instructions, what jumps out to me is that imagery changes
dramatically between zoom levels, especially on the higher/more zoomed
in levels.... 17, 18, 19 range.

And often gets older the closer you zoom in. So even tracing with one
imagery URL, depending on what zoom level you are at, you will see
radically different age imagery and maybe different buildings, roads
etc.

That could be one reason someone cares what zoom level the tracing was done at.

Cheers,
Blake

On Wed, Feb 26, 2020 at 6:59 AM Frederik Ramm <frederik at remote.org> wrote:
>
> Hi,
>
> a user started adding "trace_zoom" and "trace_zoom:range" tags to
> objects in OSM, and closer inspection led to this MapRoulette task:
>
> https://maproulette.org/challenge/12836/task/42414493
>
> It claims to be created by "MappingHuman" and carries these instructions:
>
> --- snip ---
>
>     use your most preferred imagery
>     has to be familiar with Solving Multiple Tasks Together before
> forwarding completions
>     improveWay tracing, lock zoom level
>     add trace_zoom=* if non-exist, ensure to match zoom
>     add trace_zoom:range=* if non-exist, to indicate approx. trace_zoom
> levels
>     add source on Object or changeset
>     freely include comments
>
> Changeset comments
>
> please consider including hashtags/comment-words: mappinghuman #M.H
> #alongside_A.I #maproulette for changeset analysis
>
> --- snip ---
>
> I am at a loss here. Who is "Mapping Human" and what is their goal with
> this? Which objects have they selected for editing and according to what
> criteria? Why are they apparently instructing users to add unusual tags
> (trace_toom, trace_zoom:range) to OSM? Why do they request to "add
> source on Object or changeset" when adding source tags on objects is
> generally recommended against? What are the cryptic changeset comments
> "#M.H #alongside_A.I"?
>
> Is there any way to find answers other than sending a private message to
> the pseudonymous "Mapping Human" through MapRoulette?
>
> How many other equally cryptic tasks are there on MapRoulette?
>
> Is there even any quality control when people create new MapRoulette
> tasks? Or at least some sort of four-eyes principle? Or at least a
> transparency "best practice" that would lead to people explaining who
> they are, what they want to achieve with a certain task, how many tasks
> they're running and what instructions they are giving to users?
>
> Bye
> Frederik
>
> --
> Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"
>
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----------------------------------------------------
Blake Girardot
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