spot-marker

npm module which allows temporal information about a given point to be recorded

Positional memory
A spot remembers where it was at distributed moments in the past
Undetermined periods
Optionally store periods during which it's position could not be determined.
Spherical position
Spots store surface position on a globe in longitude and latitude.
Database access
Read and write data to and from various data storage.

installation

npm install spot-marker

var spotMarker = require('spot-marker');

Spot data is store

- : Time spans. + : Position at give timespan. # : Interpolation not valid between this and next point

P1 +----+-----#        +----+--------------+
P2    +------+-------+------------+
P3       +------------+
P4                +------#  ++---------+