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This error occurs when we try to use the ave() function without specifying the FUN argument. We can solve this error by specifying the FUN argument explicitly. For example, average <- ave(data$x, data$group, FUN=mean) This tutorial will go through the error in...

This error occurs when you try to split a non-character vector using the strsplit() function. The strsplit() function only takes character vectors as input. You can solve this error by non-character value to the character class using the as.character() function, then...

This error occurs when you try to perform matrix multiplication with a data frame instead of a matrix. The %*% operator cannot handle data frames. You can solve the error by converting the data frame to a matrix using the as.matrix() function. For example, data <-...

This error occurs when you try to assign a value to a position in a vector but have a comma next to the position. R interprets the comma as trying to assign a value to a row or column position in a matrix. You can solve this error by removing the comma. For example, x...

This error occurs when you try to pass a 1-dimensional vector to the colSums function, which expects a 2-dimensional input. If we want to subset a data frame column, we can use the drop argument to preserve the data frame object. For example, df <- data.frame(x1 =...

This error occurs when you try to subset an object outside its number of dimensions. We can get the number of dimensions of an object using the dim() function. We can then solve the error by ensuring we only subset using the available dimensions. This tutorial will go...

This error occurs when you try to use a list to subset a data frame. You can solve this error by using the c function to subset the data frame based on a vector. For example, df_subset <- df[c("x", "z")] df_subset This tutorial will go through the error in detail...