> For the complete documentation index, see [llms.txt](https://indicators.agenatrader.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://indicators.agenatrader.com/standard-indicators/directional-movement-index-dmi.md).

# Directional Movement Index (DMI)

#### Description <a href="#description_31" id="description_31"></a>

Welles Wilder Jr. developed the Directional Movement concept in 1978. His concept includes the following components:

Directional Movement Index (DMI)

Average Directional Movement Index ([*ADX*](/standard-indicators/average-directional-index-adx.md))

True Range (TR)

The Directional Movement Index comes before the Average Directional Movement Index. The DMI shows the strengths of the trend-favoring price movements in percentages. Its standard application is the smoothed ADX.

#### Interpretation <a href="#interpretation_15" id="interpretation_15"></a>

The DMI shows the strength of the trend, but not the trend direction. This means that it is particularly suited as a filter for trading systems employing the Parabolic SAR, for example, in order to filter out sideways phases. When the DMI rises (especially above 25), a trend is displayed; anything below that is recognized as a sideways phase. The +DI and the –DI point towards a trend. An uptrend is classified when the +DI is above the –DI. The further apart they drift, the stronger the trend.

#### Further information <a href="#further-information_15" id="further-information_15"></a>

VTAD: <http://vtadwiki.vtad.de/index.php/DMI_-_Directional_Movement_Index>

#### Usage <a href="#usage_32" id="usage_32"></a>

```csharp
DMI(int period)
DMI(IDataSeries inSeries, int period)
DMI(int period)[int barsAgo]
DMI(IDataSeries inSeries, int period)[int barsAgo]
```

#### Return value <a href="#return-value_32" id="return-value_32"></a>

**double**

When using this method with an index (e.g. **DMI**(20)\[**int** barsAgo] ), the value of the indicator will be issued for the referenced bar.

#### Parameters <a href="#parameters_29" id="parameters_29"></a>

inSeries Input data series for the indicator

period Number of bars included in the calculations

#### Visualization <a href="#visualization_33" id="visualization_33"></a>

![Directional Movement Index (DMI)](https://agenatrader.github.io/AgenaIndicator-documentation/media/DMI.jpg)

#### Example <a href="#example_32" id="example_32"></a>

```csharp
//Output for the DMI
Print("The current DMI value is: " + DMI(20)[0]);
```