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...
by Suf | Jun 21, 2022 | Programming, R, Tips
This error occurs when you try to fit a model, and one or more of the variables is a list instead of a vector. You can solve this error by converting the list to a vector using the unlist() function. For example, x <- list(2, 5, 5, 6, 7, 11, 2, 3, 5) y <- c(4,...
by Suf | May 31, 2022 | Programming, R, Tips
This tutorial will go through adding the regression line equation and R-squared to a plot in R with code examples. Table of contentsWhat is the Regression Equation?What is the R-Squared Value?Example: Using ggpubrCreate DataPlot Data and Add Regression EquationPlot...
by Suf | May 30, 2022 | Programming, R, Tips
This error occurs when you call the rep function to replicate data, but the value you provide to replicate the number is not a positive real number. You can solve this problem by ensuring that the number is a single, positive real number. This tutorial will go through...
