time-overlap

This module provides several useful functions to calculate timestamps(enter-exit,array-format) overlapping

install

npm install time-overlap

test

npm test

usage

var timeOverlap = require('time-overlap');
 
timeOverlap.cross([1,3,5,7],[2,4,6,8]); // return [2,3,6,7]
 
// --1--2--3--4--5--6--7--8--9--        //
//   1-----3     5-----7                //arg0
//      2-----4     6-----8             //arg1 
//==============================
//      2--3        6--7                //result
 
timeOverlap.sum([1,3,5,7],[2,4,6,8]);   //return [1,4,5,8]
 
// --1--2--3--4--5--6--7--8--9--        //
//   1-----3     5-----7                //arg0
//      2-----4     6-----8             //arg1 
//==============================
//   1--------4  5--------8            //result
 
timeOverlap.crossAll(); 
//same as cross(), but can receive multiple operand
timeOverlap.sumAll(); 
//same as sum(), but can receive multiple operand
 
timeOverlap.integrate([1,2,3,4,5,7]);   // return 4
// --1--2--3--4--5--6--7--8--9--
//   1--2  3--4  5-----7
//=============================
//   1+    1+    2              = 4

other examples

<CROSS>
--1--2--3--4--5--6--7--8--9--  //
  1-----3  4-----6             //arg0 [1,3,4,6]
        3--4  5--------8       //arg1 [3,4,5,8]
=============================        
        3  4  5--6             //result [3,3,4,4,5,6]
        
        
--1--2--3--4--5--6--7--8--9--  //
  1-----3        6-----------  //arg0 [1,3,6] 
     2--------------7          //arg1 [2,7]
  1--2        5--------8       //arg2 [1,2,5,8]
=============================        
     2           6--7          //result [2,2,6,7]
     
<SUM>
--1--2--3--4--5--6--7--8--9--  //
  1-----3  4-----6     8-----  //arg0 [1,3,4,6,8]
        3--4  5-----------9    //arg1 [3,4,5,9]
=============================        
  1-----3--4-----------------  //result [1,3,3,4,4]