GIS track gap detection calculator

Calculate interval gap and jump audit with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use interval gap and jump audit to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Track [timestamp seconds,x m,y m]
[[0,0,0],[1,1,0],[10,100,0]]
Maximum allowed sampling gap (seconds)
3
Maximum plausible ground speed (m/s)
5
Interval gap and jump audit
[[0,1,1,1,0,0],[1,9,99,11,1,1]]

Try another scenario

Track [timestamp seconds,x m,y m]
[[0,0,0],[1,1,0],[10,100,0]]
Maximum allowed sampling gap (seconds)
12
Maximum plausible ground speed (m/s)
5
Interval gap and jump audit
[[0,1,1,1,0,0],[1,9,99,11,0,1]]
Calculation method

Calculation method

Interval gap and jump audit

[start index,dt,distance,speed,gap flag,jump flag]; ordered projected coordinates.

Symbols and units
a
Track [timestamp seconds,x m,y m]
b
Maximum allowed sampling gap (seconds)
c
Maximum plausible ground speed (m/s)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Timestamped coordinates, chosen gap thresholds. Returns Missing intervals and implausible jumps. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Maximum allowed sampling gap (seconds): minimum 1e-12, maximum 1000000000000.0. Maximum plausible ground speed (m/s): minimum 1e-12, maximum 1000000000000.0.
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