Applications of by() Function in R

The by() function turns out to be very effective in tasks where you need to make certain calculations for parts of your data depending on the values of a grouping variable. Some common applications include:

  1. Calculating summary statistics (e. g. Therefore, we need to select appropriate measures like mean, median, and standard deviation, for different groups within our data.
  2. Applying custom function of your data subset.
  3. Group-wise data manipulation or data transformation which involves performing the data tasks are.

by() Function in R

R has gained popularity for statistical computing and graphics. It provides the means of shifting the raw data into readable final results. in this article, we will discuss what is by() Function in R and how to use this.

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What is by() Function in R?

The by() function is a localized function in R Programming Language that fairly the function to a specified subset of a data frame based on one or more factors. This article is going to show you the basics of the by() function and its syntax, although it will also talk about its applications with the help of examples....

Applications of by() Function in R

The by() function turns out to be very effective in tasks where you need to make certain calculations for parts of your data depending on the values of a grouping variable. Some common applications include:...

Conclusion

Knowing how the by() function works is an important step towards using it properly in the analytics workflow job. Defining the data, grouping factors, and function you can quickly perform statements regarding groups and outputs that will serve the purposes of your analysis. Finally, the output, arranged in the form of the table that has the results for each group, acts as the initial step in the process of the data’s interpretation and further analysis....

by() Function in R – FAQs

Can I use the by() function with more than one grouping variable?...