r - 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 …
when to use factor () when plotting with ggplot in R?
Feb 25, 2013 · Is the general rule to use factor when the variable being used to determine the shape/size/colour is discrete, and not continuous? Or is there another use of factor in this …
Convert data.frame column format from character to factor
I would like to change the format (class) of some columns of my data.frame object (mydf) from charactor to factor. I don't want to do this when I'm reading the text file by read.table() function. ...
r - list all factor levels of a data.frame - Stack Overflow
Dec 28, 2014 · A simpler method is to use the sqldf package and use a select distinct statement. This makes it easier to automatically get the names of factor levels and then specify as levels …
r - summarizing counts of a factor with dplyr - Stack Overflow
Sep 12, 2014 · I want to group a data frame by a column (owner) and output a new data frame that has counts of each type of a factor at each observation. The real data frame is fairly large, …
r - Changing factor levels with dplyr mutate - Stack Overflow
Jan 28, 2015 · From my understanding, the currently accepted answer only changes the order of the factor levels, not the actual labels (i.e., how the levels of the factor are called). To illustrate …
Filter factor levels in R using dplyr - Stack Overflow
May 5, 2015 · You can easily convert a factor into an integer and then use conditions on it. Just replace your filter statement with: filter(as.integer(Epsilon)>2) More generally, if you have a …
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 …
What are the differences between a factor and a vector in R?
Dec 6, 2022 · However, type of the data can be character, numeric, factor, etc. So you can have a vector that is either a factor, or numbers or strings etc. Factor is defined as a categorical …
How to change the number of replicas of a Kafka topic?
Jun 22, 2016 · Option "[replication-factor]" can't be used with option"[alter]" It is funny that you can change number of partitions on the fly (which is often hugely destructive action when done in …