Examples
Examples
Try the starting example
- Supplied tide times (hours from epoch)
- 0,3,6,9
- Supplied tide heights (m)
- 1,3,2,0.5
- Query time (hours from epoch)
- 4.5
- Piecewise-linear tide height (m)
- 2.5
Try another scenario
- Supplied tide times (hours from epoch)
- 0.0,4.0,6.0,9.0
- Supplied tide heights (m)
- 1,3,2,0.5
- Query time (hours from epoch)
- 4.5
- Piecewise-linear tide height (m)
- 2.75
Calculation method
Calculation method
Piecewise-linear tide height (m)
Interpolate supplied adjacent tide points; no extrapolation.
Symbols and units
- a
- Supplied tide times (hours from epoch)
- b
- Supplied tide heights (m)
- c
- Query time (hours from epoch)
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
- Interpolation worksheet only; supplied points may not resolve actual tidal extrema or local conditions. Not navigation assurance. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Interpolation worksheet only; supplied points may not resolve actual tidal extrema or local conditions. Not navigation assurance.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.