Classic and Floor-Trader Pivot Points

Install and import#

bash

npm install fintech-algorithms

import { classicAndFloorTraderPivotPoints } from "fintech-algorithms/geometric-chart-patterns/pivots-and-levels/classic-and-floor-trader-pivot-points";

Signature#

classicAndFloorTraderPivotPoints(input)

Projects the classic floor-trader pivot and two resistance/support pairs for each bar from the previous bar's high, low, and close. The pivot is (H + L + C) / 3, r1/s1 reflect it across the prior low and high, and r2/s2 add and subtract the prior bar's range.

Parameters#

Name	Type	Notes
`input`	`TopicInput`	`bars` is the required OHLCV history, strictly ordered by `timestamp` and on a single adjustment basis. This variant reads no keys from `parameters`, but the family still validates `period` (default `20`) as an integer of at least 2 whenever it is supplied.

Returns#

TopicResult

series and latest carry pivot, r1, s1, r2 and s2. The warm-up is one bar: index 0 has no prior bar to derive levels from, so ready_at is 1 for any input of two or more bars.

Warm-up#

The first 1 bar positions are null. Every level at index i is computed from bar i-1 only, so index 0 is null across all five series and ready_at settles at 1.

Errors#

When a bar's high is below its own open, close, or low (or low is above them) — throws Error
When period is supplied as a non-integer or as a value below 2 — throws Error

Complexity: time O(n), space O(n).

Worked example#

executed Captured by running this function on the input its own test provides. Real output of real code — but not asserted against a published figure.

Input#

input

{
  "bars": [
    {
      "timestamp": "2024-01-02",
      "basis": "synthetic-unadjusted",
      "open": 100,
      "high": 101.45,
      "low": 98.695,
      "close": 100,
      "volume": 750000,
      "benchmark": 200
    },
    {
      "timestamp": "2024-01-03",
      "basis": "synthetic-unadjusted",
      "open": 101.49111452,
      "high": 103.38381693,
      "low": 100.05480022,
      "close": 101.78791214,
      "volume": 795117,
      "benchmark": 200.56326135
    },
    {
      "timestamp": "2024-01-04",
      "basis": "synthetic-unadjusted",
      "open": 102.45519048,
      "high": 104.6701838,
      "low": 100.91147007,
      "close": 102.9549389,
      "volume": 840234,
      "benchmark": 201.11020913
    }
  ],
  "parameters": {}
}

Call#

classicAndFloorTraderPivotPoints(input)

Returns#

object with 9 fields: topic_id, title, state, ready, ready_at, series, latest, parameters, …

{
  "topic_id": "D08-F01-A05",
  "title": "Classic and Floor-Trader Pivot Points",
  "state": "calculated",
  "ready": true,
  "ready_at": 1,
  "series": {
    "pivot": [
      null,
      100.04833333333333,
      101.74217643000001,
      102.84553092333333,
      103.11026585,
      102.75204238333333
    ],
    "r1": [
      null,
      101.40166666666667,
      103.42955264000003,
      104.77959177666666,
      105.14059180000001,
      104.70666929666666
    ],
    "s1": [
      null,
      98.64666666666666,
      100.10053593000004,
      101.02087804666665,
      101.20195674000001,
      100.87667321666666
    ],
    "r2": [
      null,
      102.80333333333334,
      105.07119314,
      106.60424465333334,
      107.04890091,
      106.58203846333333
    ],
    "s2": [
      null,
      97.29333333333332,
      98.41315972000002,
      99.08681719333332,
      99.17163079000001,
      98.92204630333333
    ]
  },
  "latest": {
    "pivot": 101.55414906333333,
    "r1": 103.07243937666665,
    "s1": 99.95121557666666,
    "r2": 104.67537286333332,
    "s2": 98.43292526333333
  },
  "parameters": {},
  "diagnostics": {
    "causal": true,
    "input_count": 96
  }
}

Diagrams#

Calculation flow#

Classic and Floor-Trader Pivot Points calculation flow

flowchart LR
    A["closed OHLC bars or causally confirmed pivots with session"] --> B["Validate order, basis, and finite values"]
    B --> C["Apply the selected Classic and Floor-Trader Pivot Points convention"]
    C --> D["Emit value, readiness, and diagnostics"]
    D --> E["Interpret descriptively; test outcomes separately"]
    B -->|invalid or insufficient| X["Withhold output with a reason"]

Classic and Floor-Trader Pivot Points readiness and evidence states

stateDiagram-v2
    [*] --> Waiting
    Waiting --> Ready: enough valid causal observations
    Waiting --> Rejected: malformed or unsupported input
    Ready --> Calculated: selected formula applied
    Calculated --> Interpreted: diagnostic and limitation retained
    Interpreted --> Ready: next observation arrives
    Rejected --> Waiting: corrected input and deterministic reset

How it works#

This page states the contract — how to call it correctly. The article explains the concept: why it works, and where it breaks.

Read the article →

References#

CFA Institute technical-analysis overview — see linked primary or authoritative record
TA-Lib maintained source — see linked primary or authoritative record
Long-Term Storage Capacity of Reservoirs — see linked primary or authoritative record
Evidence decision
Level 1 evidence map

Classic and Floor-Trader Pivot Points

Install and import#

Signature#

Parameters#

Returns#

Warm-up#

Errors#

Worked example#

Input#

Call#

Returns#

Diagrams#

Calculation flow#

How it works#

References#

The rest of the Pivots and Levels family#