by Suf | Jul 20, 2022 | Programming, R, Tips
This error occurs when you try to fit a regression model and one or more of the predictor variables are either factor or character and have only one unique value. You can solve this error by using the lapply() function to display each of the unique values for each...
by Suf | Jul 20, 2022 | Programming, R, Tips
This error occurs when you try to convert a number to a date without providing an origin date. You can solve this error by providing a date as an origin argument to the as.Date function. For example, as.Date(34291, origin = “1900-01-01″) This tutorial will...
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...
