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 …
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 …
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 - 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, …
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 …
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 …
Subset a dataframe by multiple factor levels - Stack Overflow
How can I avoid using a loop to subset a dataframe based on multiple factor levels? In the following example my desired output is a dataframe. The dataframe should contain the rows of …
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 …
colors - Colouring plot by factor in R - Stack Overflow
May 26, 2016 · Using R's built in plot functionality to get a plot colored by a factor and an associated legend is a 4-step process, and it's a little more technical than using ggplot2. First, …
Using `geom_line ()` with X axis being factors - Stack Overflow
May 3, 2013 · GGPLOT with lines for factor on x-axis data not working. 1. Line graph with multiple factors in ggplot2. 2.