Retrieve polylines with a precision of 6

[FlowMo7]

I have noticed that in the current HTTP API (release v5.1.0) the polyline returned by e.g. the route service has a precision of 1e5.
I'm still running a server (version 4.7.1) which provides the polyline with a precision of 6.
Is there a parameter or any chance to get the polyline returned with a precision of 1e6 in the new version, or is the precision 'lost' at the extract / contract process?

I haven't found anything in the Wiki, and after serching the repository, the line 15 of the following file seems to make the precision hardcoded:
https:/Project-OSRM/osrm-backend/blob/807aa71a7c80b714b7a89db9c99c15720572ba25/include/engine/polyline_compressor.hpp

[danpat]

@Florian77711 We changed the default precision to 5 to match the default precision in Google's polyline.js library. Although it can be changed to 6, most people weren't, and we were fielding a constant stream of questions about it. We decided to switch to 5 just to stop the flood of problems. It also packs a bit smaller.

One way to approach this might be to support polyline6 as a separate type. I can understand the desire for 1e6 precision, but I can't think of many use-cases for anything beyond that (or less than 1e5).

@TheMarex thoughts? This could simplify (and speed up) some of our internal API code as well....

[TheMarex]

I don't see a problem with offering polyline6 as well.

[thrownblown]

For what its worth, changing the include/engine/polyline_compressor.hpp back to 1e6 was a trivial change.
I just finished rebuilding and reparsing my planet files and everything works as expected. If anyone else is having this issue here's my fix:
thrownblown@244f0b0

[danpat]

This landed with PR #3220 , a new geometries=polyline6 option is available in master and should go out with the 5.5 tag when it happens.

[thrownblown]

Rad!

Alex Farioletti
415.312.1674
*tcbcourier.com http://tcbcourier.com *

On Mon, Nov 7, 2016 at 12:21 PM, Daniel Patterson [email protected]
wrote:

This landed with PR #3220
#3220 , a new
geometries=polyline6 option is available.

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