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improve comments for gps_precision

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This commit is contained in:
Mortada Mehyar 2016-01-25 15:17:44 -08:00
parent 502aedb33e
commit 17c3c1d66a
1 changed files with 3 additions and 2 deletions
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5
include/engine/plugins/match.hpp
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@ -85,8 +85,9 @@ template <class DataFacadeT> class MapMatchingPlugin : public BasePlugin
{ {
CandidateLists candidates_lists; CandidateLists candidates_lists;
// assuming the gps_precision is the standart-diviation of normal distribution that models // assuming gps_precision is the standard deviation of a normal distribution that
// GPS noise (in this model) this should give us the correct candidate with >0.95 // models GPS noise (in this model), this should give us the correct search radius
// with > 99% confidence
double query_radius = 3 * gps_precision; double query_radius = 3 * gps_precision;
double last_distance = double last_distance =
util::coordinate_calculation::haversineDistance(input_coords[0], input_coords[1]); util::coordinate_calculation::haversineDistance(input_coords[0], input_coords[1]);