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1. Download Revolution Mice & Touchpads Drivers Download
2. Download Revolution Mice & Touchpads Drivers
3. Download Revolution Mice & Touchpads Driver Windows 7
4. Download Revolution Mice & Touchpads Driver Download

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The R language is a powerful programming language that many statisticians, data scientists, and data analysts use. You can use R in Power BI Desktop's Power Query Editor to:

• Prepare data models.

• Create reports.

• Do data cleansing, advanced data shaping, and dataset analytics, which include missing data completion, predictions, clustering, and more.

Install R

You can download R for free from the Revolution R Open download page and the CRAN Repository.

Install mice

As a prerequisite, you must install the mice library in your R environment. Without mice, the sample script code won't work properly. The mice package implements a method to deal with missing data.

To install the mice library:

1. Launch the R.exe program (for example, C:Program FilesMicrosoftR OpenR-3.5.3binR.exe).

2. Run the install command from the R prompt:

Use R in Power Query Editor

To demonstrate using R in Power Query Editor, we'll use an example stock market dataset contained in a .csv file and work through the following steps:

1. Download the EuStockMarkets_NA.csv file. Remember where you save it.

2. Load the file into Power BI Desktop. From the Home tab, select Get Data > Text/CSV.

3. Select the EuStockMarkets_NA.csv file, and then choose Open. The CSV data is displayed in the Text/CSV file dialog box.

4. Select Load to load the data from the file. After Power BI has loaded the data, the new table appears in the Fields pane.

5. To open Power Query Editor, from the Home ribbon select Edit Queries.

6. From the Transform tab, select Run R script. The Run R script editor appears. Rows 15 and 20 have missing data, as do other rows you can't see in the image. The following steps show how R completes those rows for you.

7. For this example, enter the following script code in the Script box of the Run R script window. Replace <Your File Path> with the path to EuStockMarkets_NA.csv on your local file system, for example, C:/Users/John Doe/Documents/Microsoft/EuStockMarkets_NA.csv.

   Note

   You might need to overwrite a variable named output to properly create the new dataset with the filters applied.

8. Select OK. Power Query Editor displays a warning about data privacy.

9. Inside the warning message, select Continue. In the Privacy levels dialog box that appears, set all data sources to Public for the R scripts to work properly in the Power BI service.

   For more information about privacy settings and their implications, see Power BI Desktop privacy levels.

10. Select Save to run the script.

Notice a new column in the Fields pane called completedValues. This column has a few missing data elements, such as on row 15 and 18. Take a look at how R handles that in the next section.

With just five lines of R script, Power Query Editor filled in the missing values with a predictive model.

Create visuals from R script data

We can now create a visual to see how the R script code with the mice library completes the missing values.

You can save all completed visuals in one Power BI Desktop .pbix file and use the data model and its R scripts in the Power BI service.

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Note

You can download a .pbix file with all these steps completed.

After you've uploaded the .pbix file to the Power BI service, you need to take additional steps to enable service data refresh and updated visuals:

• Enable scheduled refresh for the dataset: To enable scheduled refresh for the workbook containing your dataset with R scripts, see Configuring scheduled refresh. This article also includes information about personal gateways.

• Install a personal gateway: You need a personal gateway installed on the machine where the file and R are located. The Power BI service accesses that workbook and re-renders any updated visuals. For more information, see Use personal gateways in Power BI.

Limitations

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There are some limitations to queries that include R scripts created in Power Query Editor:

• All R data source settings must be set to Public. All other steps in a Power Query Editor query must also be public.

  To get to the data source settings, in Power BI Desktop, select File > Options and settings > Data source settings.

  In the Data source settings dialog box, select one or more data sources, and then select Edit Permissions. Set the Privacy Level to Public.

• To schedule refresh of your R visuals or dataset, enable scheduled refresh and install a personal gateway on the computer containing the workbook and R.

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There are all sorts of things you can do with R and custom queries. Explore and shape your data just the way you want it to appear.

Next Steps