by Suf | Jul 17, 2022 | Programming, R, Tips
This error occurs when you attempt to fit a model and two or more predictor variables are perfectly correlated. You can solve this error by using the cor() function to identify the variables with a perfect correlation and drop one of the variables from the model. This...
by Suf | Jul 16, 2022 | Programming, R, Tips
This error occurs if you try to perform a logical comparison in an if-statement with a zero-length variable. This error can happen if you define a variable with zero length or if you attempt to access a column of a data frame that does not exist. You can solve the...
by Suf | Jul 13, 2022 | Programming, R, Tips
This error occurs when you try to create a data frame with vectors with different lengths. The resultant data frame would have a differing number of rows in each column. You can solve the error by checking the lengths of the vectors and filling the shorter vectors...
by Suf | Jul 11, 2022 | Programming, R, Tips
This error occurs when you try to call the n() function from the dplyr package but already have plyr loaded after loading dplyr. Both packages have the functions summarise() or summarize() which use n(). You can solve the error by using the...
by Suf | Jul 10, 2022 | Programming, R, Tips
In order to perform matrix multiplication in R, the number of columns in the left matrix must be the same as the number of rows in the right matrix. This error occurs when you try to multiply two matrices where the number of columns in the left matrix does not match...
by Suf | Jul 10, 2022 | Programming, R, Tips
This error occurs when you try to plot the variables from a data frame but specify a numeric vector instead of a data frame for the data argument. You can solve this error by passing the data frame as the data argument for the ggplot() function call. This tutorial...
