Aroon

Indicators

• High
• Low

Aroon

14 candles

• Aroon Up
• Aroon Down
• Oscillator

This is how the node looks on the board: inputs on the left, outputs on the right.

How recent the last high and low are. Measures how long ago the highest high and the lowest low of the last candles were. Aroon Up is 100 when the current candle has the high and falls with every candle without a new high down to 0; Aroon Down likewise with the low. With Up above 70 and Down below 30 a fresh uptrend is running. Example: “Aroon Up crosses above Aroon Down” reports when new highs are fresher than new lows again.

What it looks like

• Price (close of each candle)
• Aroon Up
• Aroon Down
• Up crosses above Down

Top: the price; bottom: Aroon Up and Aroon Down of the same 1-hour candles. When the current candle has the highest high of the last 14, Up is at 100 and falls with every candle without a new high. At the dots Up rises above Down: new highs are fresher than new lows again.

Settings

The settings appear on the right under “Properties” once you click the node on the board. Below each field you find the same explanation as here.

Candles

Default: 14 · from 1 to 500, whole number

How many candles the high and low are searched over. 14 is usual, 25 gives calmer lines.

Example

Notifies you when Aroon Up rises above Aroon Down, so new highs are fresher than new lows again.

How to connect the nodes:

1. Candle (High) → Aroon (High)
2. Candle (Low) → Aroon (Low)
3. Aroon (Aroon Up) → Compare A/B (A)
4. Aroon (Aroon Down) → Compare A/B (B)
5. Compare A/B (true/false) → Telegram (Trigger)

On the board it reads: 14 candles

Chain as JSON

To try it, copy it and paste it in the editor under “Import”. Importing creates a new chain.

aroon.json

{
  "name": "Example: Aroon",
  "version": 1,
  "nodes": [
    { "id": "c1", "type": "core.candle", "position": { "x": 40, "y": 40 }, "settings": { "pair": "BTC/USDT", "timeframe": "1h" } },
    { "id": "r1", "type": "core.aroon", "position": { "x": 260, "y": 40 }, "settings": {} },
    { "id": "k1", "type": "core.compare-ab", "position": { "x": 480, "y": 40 }, "settings": { "operator": "crossesAbove" } },
    { "id": "t1", "type": "core.telegram", "position": { "x": 700, "y": 40 }, "settings": {} }
  ],
  "edges": [
    { "from": "c1.high", "to": "r1.high" },
    { "from": "c1.low", "to": "r1.low" },
    { "from": "r1.up", "to": "k1.a" },
    { "from": "r1.down", "to": "k1.b" },
    { "from": "k1.out", "to": "t1.in" }
  ]
}

Inputs and outputs

Only matching types connect: number series to number series (round pin), signal to signal (square), message to message (diamond).

Direction	Pin	Type	Note
Input	High	Number series	required
Input	Low	Number series	required
Output	Aroon Up	Number series	–
Output	Aroon Down	Number series	–
Output	Oscillator	Number series	–

Good to know

• In messages the values are called “Aroon Up 14”, “Aroon Down 14”, “Aroon oscillator 14”.
• Warm-up with the default settings: 15 candles (this many extra candles are loaded by the replay before the value is reliable).
• Search also finds it under: aroon, trend, trend strength, high, low, oscillator, recent.

Technical details

Aroon Up = 100 × (candles − candles since the highest high) / candles over the last candles + 1, the current one included; Aroon Down likewise with the lowest low, the oscillator is Up − Down; with equal values the most recent counts. The same formula as TradingView’s built-in Aroon.

• Type in the chain: core.aroon · Version 1.0.0 · Category key ind
• Settings in the chain: length (Candles)
• Pins in the chain: Input high, low · Output up, down, osc
• Reference tests in the manifest: 1 (with fixed price data: 500 candles of 1h)
• How a node is built