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Regarding Matrix Operations
Title
Question
Apart from binding rows and cols using rbind and cbind , it would be more helpful, if the video suggests edit and delete operations on a matrix.

R Operations-on-Matrices-and-Data-Frames 11-12 min 50-60 sec 12-10-19, 3:49 p.m. sureshk1704@gmail.com

Answers:

Thank you for your suggestions. Editing and deleting can be achieved by indexing and slicing the required rows or columns.
12-10-19, 3:55 p.m. wangikarsmita2019@gmail.com



12-10-19, 3:58 p.m. chrl3hr5@gmail.com


We will definitely look into it. Meanwhile, you can learn to delete data from a matrix and a data frame by considering captaincy data frame used in various spoken tutorials of R from the example below -

Let us say we want to delete the 1st and 3rd columns from the captaincy data frame. To do so execute the following statement -


captaincy <- captaincy[c(-1,-3)]


If only 3rd column is to be eliminated then execute the following -


captaincy <- captaincy[-3]


If all columns from 1st to 3rd of the captaincy data frame are to be eliminated then we may execute the following statement -


captaincy <- captaincy[-1:-3]
12-10-19, 4:16 p.m. sudhakarst


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