11 min
Ep5] Cleaning Data, loops and Vectorisation Learning R from Scratch
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- Istruzione
2] Cleaning Data: To remove a column 'col' in a dataframe 'data' using null, the command is:
data$col - NULL
How to apply hash strings (a series of unreadable text) to replace important data e.g. full names. https://cran.r-project.org/web/packages/openssl/vignettes/crypto_hashing.html
3] For Loops:
The code I discussed
For (i in 1:10){
commands to be written here in a series of lines
}
4] Vectorisation: The explanation of apply (and related commands like 'lapply') I used is here https://www.guru99.com/r-apply-sapply-tapply.html
2] Cleaning Data: To remove a column 'col' in a dataframe 'data' using null, the command is:
data$col - NULL
How to apply hash strings (a series of unreadable text) to replace important data e.g. full names. https://cran.r-project.org/web/packages/openssl/vignettes/crypto_hashing.html
3] For Loops:
The code I discussed
For (i in 1:10){
commands to be written here in a series of lines
}
4] Vectorisation: The explanation of apply (and related commands like 'lapply') I used is here https://www.guru99.com/r-apply-sapply-tapply.html
11 min