Caret package findCorrelation() function

r correlation r-caret
statsstudent718 picture statsstudent718 · Jan 30, 2016 · Viewed 9.2k times · Source

Hello I am having trouble with the findCorrelation() function, Here is my input and the output:

findCorrelation(train, cutoff = .50, verbose = FALSE)

Error in findCorrelation_exact(x = x, cutoff = cutoff, verbose = verbose) : correlation matrix is not symmetric

Does anyone know why this is happening?

Answer

wotter picture wotter · Mar 6, 2016

the findCorrelation function expects a correlation matrix as x value, so try this instead:

findCorrelation(cor(train), cutoff = .50, verbose = FALSE)

Reference: Caret pre-processing

Related questions

How can I create a correlation matrix in R?

I have 92 set of data of same type. I want to make a correlation matrix for any two combination possible. i.e. I want a matrix of 92 x92. such that element (ci,cj) should be correlation between ci and cj. …

Read More
Calculate correlation with cor(), only for numerical columns

I have a dataframe and would like to calculate the correlation (with Spearman, data is categorical and ranked) but only for a subset of columns. I tried with all, but R's cor() function only accepts numerical data (x must be …

Read More
cor shows only NA or 1 for correlations - Why?

I'm running cor() on a data.framewith all numeric values and I'm getting this as the result: price exprice... price 1 NA exprice NA 1 ... So it's either 1 or NA for each value in the resulting table. Why are the NAs showing …

Read More