**Trend Intensity Index (TII)** is an oscillator that measures the strength of the current trend for any financial instrument. It can be used independently or in conjunction with other trend-following indicators to accurately gauge the price movements during trending markets.

Developed by **M.H Pee**, TII oscillates between 0 to 100%. A value above 80% is an indicator of a strong bullish trend, while a value below 20% is an indicator of a strong bearish trend.

The indicator also consists of a signal line which is 9 periods exponential moving average of the TII line.

## Preferred Timeframe

You can use this indicator in any timeframe.

**Also Read: **Know Sure Thing (KST) AFL Code

## Screenshot

Below is the screenshot of the trend intensity index (TII) indicator plotted in an Amibroker chart. It is plotted as a white line over the candlestick chart.

Along with TII, a signal line is also plotted as a blue line.

## Trend Intensity Index (TII) AFL Download

Download the AFL code of trend intensity index (TII) from the below link:

Trend Intensity Index AFL Download

## AFL Explanation

The calculation of Trend intensity index is a multi-step process as described below:

**Step 1:** Calculate the simple moving average of close price for ‘n’ periods. Call it SMA

**Step 2:** Find out the positive and negative deviation of the close price at each candle with respect of SMA calculated in the previous step

Dev = Close – SMA

If (Dev>0) then posDev=Dev, else negDev=abs(Dev)

**Step 3: **Calculate the sum of Positive and Negative deviations for the period twice smaller than the period used for SMA calculation

SDpos = sum(posDev, m);

SDneg = sum(negDev, m);

Here m = n/2 if n is even number and (n+1)/2 if n is odd number

**Step 4: **Calculate trend intensity index using the below formula

TII = 100 * (SDpos) / (SDpos + SDneg);

**Step 5: **Calculate signal line as a 9 periods exponential moving average of trend intensity index

TIISignal = EMA(TII, 9);

And then, TII and TIISignal are plotted on a candlestick chart by using the standard Amibroker “plot” function.

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## Long and Short Rules

Here are the long and short rules you can consider while trading through TRIMA:

- If TII is above 80, it signifies strong
- If TII is below 20, it signifies strong downtrend
- If TII rises above 20, go long
- If TII goes below 80, go short
- If TII crosses above TIISignal, go long
- If TII crosses below TIISignal, go short

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