![]() ![]() Minimize the inconsistencies between the map tiles and the road index used for You should re-snap old paths just before showing them on a map, in order to Since Google Maps is updated regularly, this may happen occasionally,Īnd can occur more often if you regularly look at old paths on a map (forĮxample, paths that were snapped several weeks ago). If only a few of your queries are affected this is likely to be theĬause. Recently, causing them to become out of sync with the road index used for If neither of the above is the case, the map tiles may have been updated Several meters, resulting in lines that are jagged or slightly off from the Latitude/longitude pairs to 5 decimal places, which introduces an error of Are you using encoded polylines? Encoded polylines truncate.Precision of less than 7 decimal points causes precision errors when the Prior to displaying them? Storing snapped latitude/longitude pairs at a Are you truncating the precision of the snapped latitude/longitude pairs.Why are my snapped paths are jagged or slightly off from the road when I The snapping algorithm works best for points that are If you are manually clicking on a map to create points, it's very easy toĬreate paths with few points or sparse points that the snapping algorithmĭoesn't handle well. ![]() (for example 60 seconds), the snap-to-road algorithm may not be able toĭetermine roads traveled with sufficient accuracy. Sampled at shorter intervals (every 1-10 seconds). If you are sampling your points at timed intervals, ensure your points are.Common issues Some points aren’t being snapped, or I have gaps in snapped paths. Not suitable if you want your snapped paths to follow the road at high zoom Which results in an error of approximately 2 meters. Can I use encoded polylines to display snapped paths? Encoded polylines are only specified to a precision of 5 decimal places, Maximum zoom level, you should store your snapped latitude/longitude pairs at 7ĭecimal places of precision. Pairs? To ensure that snapped paths follow the roads at all zoom levels, even at What level of precision should I use to store my snapped latitude/longitude Is there a limit on the number of points I can send per query? Yes, a query can have at most 100 points. Troubleshooting FAQ Implementation issues At which frequency should I sample my vehicle location? Every 1-10 seconds is recommended for high quality snap-to-road results. Servers, as many clients try to retry requests very quickly. ThisĮnsures that broken requests or wide scale failures do not flood Google’s For example, if a request fails once, retry after a second, if itįails again, retry after two seconds, then four seconds, and so on. When requests fail, you should ensure that you retry requests with exponentialīackoff. Users from exhausting your daily quota, while still allowing reasonableĪccess to all users. This limit should be configured to prevent a single or small group of Per day, requests per 100 seconds, and requests per 100 seconds per user. You have exceeded the request limit that you configured in the The request was throttled due to project request limits being reached. Adjust your usage cap to increase your daily limit (if applicable).Your account, and all requests must include a valid API key. In order to use Google Maps Platform products, billing must be enabled on The provided method of payment is no longer valid (for example, a.A self-imposed usage cap has been exceeded.Billing has not been enabled on your account.The request was denied for one or more of the following reasons: This error will not be returned if a placeId is passedįor a road which no longer exists, or for a place which is not a road. Only one of these parameters may be specified for Your request included both placeIds and a.Your request included an invalid placeId.Each point should be a pair of numbers separated by a comma, Please ensure you have at least 1, and fewer than 100 Your request contained invalid arguments. "\"path\" parameter contains an invalid value: ☃" Please ensure that you've included the entire key, and that you've Your API key is not valid or was not included in the request. "message": "\"placeId\" value is malformed: \"aChIJqaknMTeuEmsRUYCD5Wd9ARM\"", status: A status code indicating the nature of the error.įor example, sending an invalid placeId parameter will return the following.message: A short description of the error.code: This is the same as the HTTP status of the response. ![]() The response contains an object with a single error object with the following In the case of an error, a standard format error response body will be returnedĪnd the HTTP status code will be set to an error status. ![]()
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