Loop Through Data Frame Columns & Rows in R (4 Examples) | for-, while- & repeat-Loops | Add Values

How to loop over the variables and rows of a data matrix in the R programming language. More details: https://statisticsglobe.com/loop-through-data-frame-columns-rows-in-r/ R code of this video: data ＜- data.frame(x1 = 1:5, # Create example data x2 = 6:10, x3 = 11:15) data # Print example data data1 ＜- data # Replicate example data for(i in 1:ncol(data1)) { # for-loop over columns data1[ , i] ＜- data1[ , i] + 10 } data1 # Print updated data data2 ＜- data # Replicate example data for(i in 1:nrow(data2)) { # for-loop over rows data2[i, ] ＜- data2[i, ] - 100 } data2 # Print updated data data3 ＜- data # Replicate example data i ＜- 1 # Create running index while(i ＜=2) { # Start while-loop data3[ , i] ＜- data3[ , i] + 100 i ＜- i + 1 } data3 # Print updated data data4 ＜- data # Replicate example data i ＜- 1 # Create running index repeat{ # Start repeat-loop data4[ , i] ＜- data4[ , i] + 100 i ＜- i + 1 if(i ＞ 2) { break } } data4 # Print updated data Follow me on Social Media: Facebook – Statistics Globe Page: https://www.facebook.com/statisticsglobecom/ Facebook – R Programming Group for Discussions & Questions: https://www.facebook.com/groups/statisticsglobe Facebook – Python Programming Group for Discussions & Questions: https://www.facebook.com/groups/statisticsglobepython LinkedIn – Statistics Globe Page: https://www.linkedin.com/company/statisticsglobe/ LinkedIn – R Programming Group for Discussions & Questions: https://www.linkedin.com/groups/12555223/ LinkedIn – Python Programming Group for Discussions & Questions: https://www.linkedin.com/groups/12673534/ Twitter: https://twitter.com/JoachimSchork Music by bensound.com