Calculating Yield in Power BI

To calculate the yield for the last output and first input of a multi-row process in Power BI, follow this structured approach:

Definitions

• Input: The quantity at the start of the process.
• Output: The quantity at the end of the process.
• Yield: Defined as the ratio of output to input, often expressed as a percentage.

Steps to Calculate Yield

1. Data Preparation

Ensure your dataset includes columns for inputs and outputs. The data should resemble the following structure:

2. Identify First Input and Last Output

Use DAX (Data Analysis Expressions) to filter and summarize your data. You will need measures for the first input and the last output.

3. DAX Measures

Measure for First Input

This measure retrieves the first input value:

FirstInput = FIRSTNONBLANK('YourTable'[Input], 1)

Measure for Last Output

This measure retrieves the last output value:

LastOutput = LASTNONBLANK('YourTable'[Output], 1)

Measure for Yield Calculation

This final measure calculates the yield as a percentage:

Yield = DIVIDE([LastOutput], [FirstInput], 0) * 100

4. Visualization

To visualize the yield, drag the Yield measure into your report canvas or any relevant visuals such as cards or KPI indicators.

Best Practices

• Ensure proper data formatting for numerical calculations.
• Confirm that there are no null values in input or output columns affecting your calculations.
• Consistently document your DAX measures for future reference.

Conclusion

By implementing the above measures in Power BI, you can effectively calculate the yield for the last output and the first input of your process. For further advancement in DAX skills and data analysis techniques, consider exploring courses on the Enterprise DNA Platform.