Bug with viaroute2sldf about stplanr HOT 8 CLOSED

Seems like OSRM running on router.project-osrm.org is returning an extra two variables in each route instruction than is defined in the API. I will put in a fix but will need to look into what the additional two variables mean.

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Definition is here: https://github.com/Project-OSRM/osrm-backend/blob/543e77b9befa2798621ec07951891c79d47acb4c/descriptors/json_descriptor.hpp

Additional two variables are pre-turn bearing (string) and pre-turn bearing (numeric).

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It seems the two issues were unrelated (should really be a separate bug report).

Still getting a bug with the second:

Error: lexical error: inside a string, '\' occurs before a character which it may not.
          bA`EqF~LuY~HyUlJw[~M}X~GeSfQo\zUm^z]_j@zl@cfAlh@ev@fe@qq@fEi
                     (right here) ------^ 

Seems like a parsing issue... Any ideas?

Has this been an issue in other languages @bdferris?

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What are you running to get that error? I tried the example and can't reproduce it.

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exroutes <- viaroute(50, 0, 51, 1)
viaroute2sldf(exroutes)

Updating various packages now to see if that makes a difference.

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This seems to be a problem with RCurl not escaping double backslashes with (another two) backslashes so that when jsonlite::fromJSON parses the string (and strips backslashses) you are still left with a double backslash (to match the original OSRM output). In this case it tries to use \z which is not a valid sequence and so fails. I will try to use gsub to add the extra backslash.

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On testing this I realised that that is actually quite a good example of OSRM as it includes a stretch through the Channel Tunnel but still works.

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Job done

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