| IndexDiagonal | R Documentation | 
IndexDiagonalIndexes relative to the diagonal.
IndexDiagonal(x, off = FALSE, by.row = TRUE)
| x | The data to be indexed. | 
| off | TRUE if indexing by the off diagonal. | 
| by.row | Indexes by row (versus by column). those to the right of them, to NA. | 
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.