Скачать или смотреть Matrix Indexing with Finance Example in R E23

Indexing or subsetting a matrix is very useful for keeping data you want to keep or dropping data you do not want to keep. In this video I show you how to drop and keep columns and rows as well as an example of updating an old matrix with new data. I use the storyline of credit data to help you get an idea of how indexing a matrix would be used in the real world. Of course real world data is millions of rows and thousands of columns.


This video and the videos in this series are based off of my favorite R programming book.

The Art of R Programming by Matloff
https://amzn.to/2ZqnzZF (my affiliate link to help support more free videos)


Welcome to the "Introduction to R" video series. If you found this video helpful, be sure to check out all the other R videos in the playlist.

   • R Programming  



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