,

@gabrielle.kub

To compute the Average Directional Index (ADX) using Visual Basic, you can use the following steps:

- First, import the necessary libraries for performing mathematical calculations in Visual Basic. You can do this by including the following line at the beginning of your code:

```
1
``` |
Imports System.Math |

- Create a function to calculate the True Range (TR) for each period. The True Range is calculated as the maximum of the high and low price differences, high and previous close price differences, or low and previous close price differences. Here is an example function to calculate the True Range:

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Function TrueRange(high As Double, low As Double, previousClose As Double) As Double Dim tr1 As Double = Abs(high - low) Dim tr2 As Double = Abs(high - previousClose) Dim tr3 As Double = Abs(low - previousClose) Dim trueRange As Double = Max(Max(tr1, tr2), tr3) Return trueRange End Function |

- Next, create a function to calculate the Directional Movement (DM) for each period. The DM is calculated as the difference between the current high and the previous high (positive directional movement) or the difference between the previous low and the current low (negative directional movement). Here is an example function to calculate the Directional Movement:

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Function DirectionalMovement(high As Double, low As Double, previousHigh As Double, previousLow As Double) As Double Dim positiveDM As Double = high - previousHigh Dim negativeDM As Double = previousLow - low If positiveDM > negativeDM Then Return positiveDM Else Return 0 End If End Function |

- Then, create a function to calculate the Average True Range (ATR) for each period. The ATR is calculated as the smoothed average of the True Range over a specified period. Here is an example function to calculate the Average True Range:

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Function AverageTrueRange(trueRangeValues As List(Of Double), period As Integer) As Double Dim atr As Double = 0 If trueRangeValues.Count >= period Then Dim sum As Double = 0 For i As Integer = 0 To period - 1 sum += trueRangeValues(i) Next atr = sum / period End If Return atr End Function |

- Finally, create a function to calculate the Average Directional Index (ADX) using the calculated DM and ATR values. The ADX is calculated as the smoothed average of the directional movement index over a specified period. Here is an example function to calculate the Average Directional Index:

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Function AverageDirectionalIndex(positiveDMValues As List(Of Double), negativeDMValues As List(Of Double), atrValues As List(Of Double), period As Integer) As Double Dim diPlus As Double = (SMA(positiveDMValues, period) / SMA(atrValues, period)) * 100 Dim diMinus As Double = (SMA(negativeDMValues, period) / SMA(atrValues, period)) * 100 Dim dx As Double = Abs(diPlus - diMinus) / (diPlus + diMinus) * 100 Dim adx As Double = SMA(dx, period) Return adx End Function |

Note: In the above examples, `SMA`

represents the simple moving average function that calculates the average of a list of values over a specified period.

You can use these functions to calculate the Average Directional Index (ADX) in Visual Basic by passing the necessary input data (high, low, close prices) and the specified period for the calculations.

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