Why use as.factor () instead of just factor () - Stack Overflow
‘factor(x, exclude = NULL)’ applied to a factor without ‘NA’s is a no-operation unless there are unused levels: in that case, a factor with the reduced level set is returned. ‘as.factor’ coerces its argument to …
Using R dplyr mutate to create a factor column using pre-declared ...
Sep 28, 2023 · Using R dplyr mutate to create a factor column using pre-declared levels Ask Question Asked 2 years, 5 months ago Modified 2 years, 5 months ago
Synology NAS: Trying to login after 2-factor authentication results in ...
Apr 17, 2023 · Synology NAS: Trying to login after 2-factor authentication results in "wrong verification code. please try again" Ask Question Asked 4 years, 4 months ago Modified 1 month ago
r - How to convert a factor to integer\numeric without loss of ...
See the Warning section of ?factor: In particular, as.numeric applied to a factor is meaningless, and may happen by implicit coercion. To transform a factor f to approximately its original numeric values, …
r - Re-ordering factor levels in data frame - Stack Overflow
Aug 24, 2013 · Re-ordering factor levels in data frame [duplicate] Ask Question Asked 12 years, 6 months ago Modified 4 years, 6 months ago
How to force R to use a specified factor level as reference in a ...
When creating the factor from b you can specify the ordering of the levels using factor(b, levels = c(3,1,2,4,5)). Do this in a data processing step outside the lm() call though. My answer below uses …
When to use as.numeric and as.factor in R - Stack Overflow
Feb 17, 2020 · Factors (with as.factor) are variables that have discrete values, which may or may not be ordered. In other areas of science outside R they're often called categorical values. For example …
Understand Kafka replication factor - Stack Overflow
Dec 28, 2022 · The replication factor of 3 includes the leader itself and 2 followers. Think of that factor in a more mathematical way: 1 times 3 still results in 3. Let me give an example. A topic created with 3 …
How to Find the Branching Factor of a Tree - Stack Overflow
Dec 13, 2017 · The branching factor is one characteristic of a node next to depth and gives a clue how complex a tree gets. For example, for the GO Game on a 19x19 board, the branching factor on the …
r - Replace <NA> in a factor column - Stack Overflow
Sep 30, 2017 · In `[<-.factor`(`*tmp*`, iseq, value = c(88, 88)) : invalid factor level, NA generated I think I missed a fundamental R concept about factors. Am I? I can not understand why it doesn't work. I …