A factor is a vector of integers, each of which is associated with a character 'label'. When you create a factor by reading a column of character values in a text file (e.g. .csv), R assigns the …

Feb 25, 2013 · ggplot(mtcars) + geom_point(aes(x=mpg, y=drat, colour=factor(gear))) Is the general rule to use factor when the variable being used to determine the shape/size/colour is …

There's nothing to handle the factor-to-integer (or numeric) conversion because it's expected that as.integer(factor) returns the underlying integer codes (as shown in the examples section of …

May 3, 2013 · Using `geom_line ()` with X axis being factors Asked 12 years, 7 months ago Modified 2 years, 11 months ago Viewed 66k times

‘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 …

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).

Jul 23, 2011 · The issue with this solution is that it checks many numbers that can't possibly be factors -- and it checks the higher of each factor-pair separately when you already know it is a …

Sep 16, 2015 · This is simply factoring $ (x + y)$ from each term. If it isn't clear how to do try, first try reversing the step by distributing the first sum in (4).

I'm trying to calculate the variance inflation factor (VIF) for each column in a simple dataset in python: a b c d 1 2 4 4 1 2 6 3 2 3 7 4 3 2 8 5 4 1 9 4 I have ...

Sep 1, 2019 · If you don't already know it, note that $ (-1)^3+1=0$, which implies that $x- (-1)$ is a factor of $x^3+1$. Finding the second factor can be done through long division.