
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
What is the significance of load factor in HashMap?
Feb 22, 2018 · A load factor=1 hashmap with number of entries=capacity will statistically have significant amount of collisions (=when multiple keys are producing the same hash). When collision occurs the …
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 - Change ggplot factor colors - Stack Overflow
p + geom_boxplot(aes(fill = factor(cyl))) What controls which set of colors ggplot uses and how can you change it?
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 …
"Error in initializePtr() : function 'cholmod_factor_ldetA' not ...
Nov 14, 2023 · I am attempting to build a mixed effects linear regression model using the lmer function in R. I am building a fixed effects and mixed effects model using the following code to justify the use …
Drop unused factor levels in a subsetted data frame
I have a data frame containing a factor. When I create a subset of this dataframe using subset or another indexing function, a new data frame is created. However, the factor variable retains all o...
"Factor has new levels" error for variable I'm not using
One of the variable "traffic type" had 20 factors and for one factor ie 17 there was only one row. Hence this row could be present either in train data or test data.