Friday, February 23, 2024

Power BI - How to create a Line Chart using R script visual

To create a sample line chart using an R script in Power BI, you'll first need to have the R Integration feature enabled in Power BI Desktop. Once enabled, you can use R scripts to generate visualizations directly within Power BI. Here's a step-by-step guide to creating a sample line chart using R script:

  1. Enable R Scripting:

    • Open Power BI Desktop.
    • Go to "File" > "Options and settings" > "Options."
    • Under "Global," select "R Scripting."
    • Check the box next to "Enable R scripting."
    • Click "OK" to save the changes and restart Power BI Desktop if prompted.
  2. Import Data:

    • Import the data you want to visualize into Power BI. You can connect to various data sources such as Excel files, databases, or online services.
  3. Create a New Report Page:

    • Click on "Report" in the left navigation pane to create a new report page.
  4. Add R Visual:

    • Click on the "R Script Visual" icon in the Visualizations pane to add a new R visual to the report canvas.
  5. Write R Script:

    • Drag the fields you want to use in the line chart into the "Values" section of the "Fields" pane.
    • Click on the R visual on the report canvas to select it.
    • In the "R Script Editor" pane, write the R script to generate the line chart. Here's an example script:
# Read data from Power BI dataset data <- dataset # Convert date column to Date format if needed data$Date <- as.Date(data$Date) # Plot line chart plot(data$Date, data$Value, type = "l", xlab = "Date", ylab = "Value", main = "Sample Line Chart")

Replace "dataset" with the name of your dataset, "Date" and "Value" with the names of your date and value columns, respectively.

  1. Run R Script:

    • Click on the "Run Script" button in the "R Script Editor" pane to execute the R script.
  2. View Line Chart:

    • Power BI will render the line chart based on the output of the R script.
  3. Format and Customize:

    • You can format and customize the line chart further using the formatting options available in Power BI, such as changing colors, adding titles, adjusting axes, etc.
  4. Save and Publish:

    • Once you're satisfied with the line chart, save your Power BI report and publish it to Power BI Service for sharing and collaboration.

That's it! You've created a sample line chart using an R script in Power BI. You can now use R scripts to create more complex visualizations or perform advanced data analysis within Power BI.

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