Assuming you have this data frame df, see data below. First you have to transpose all data frame except the first column. The result being a matrix that we need to convert to a data frame. Finally, we assign as column names of df2the first column of the original data frame df. Output: Data:
OK, I can reproduce this from scratch, with reshape (but not with reshape2). Something is indeed getting mangled by head(). The specific problem is an interaction between utils::head.data.frame, which drops pieces of the object without keeping a completely consistent internal structure, and as.matrix.cast_df (called by matplot), which assumes that structure is there. Adding the following method seems to fix the problem. It might … Read more
I cannot explain why, but I once found that when the folder path in which my RStudio project was saved was a very long character string, the png device would fail. When I shortened the folder path it worked.
Your data type needs to be integer for your intent Output
Error in 2:n : NA/NaN argument. This means that one (or both) of the two arguments of : are NA or NaN. 2 is not, so n must be. In your question you don’t show how you created the variable n, but if it was the result of some data that was NA, or a division by zero result for example, that would cause these errors.
You most likely have a problem with complete or quasi-complete separation: for some combination of your predictors you observed only successes of failures. That is a quite common phenomenon for logistic regression in small samples or if you have large parameter spaces. There are several implementations that add a small penalty to the likelihood in … Read more
The merge argument only takes two values as input, so you have to do them separately:
If you want to exclude the non-smokers, you have a few options. The easiest is probably this: With a data frame, the first variable is the row and the next is the column. So, you can subset using dataframe[1,2] to get the first row, second column. You can also use logic in the row selection. By using bwght$cigs>0 as … Read more
@Ansjovis86 You can specify the ppsize as a command line argument to Rstudio You may also with to set the expression option via your .Rprofile or at runtime by using the options(expressions = 5e5) command. … expressions: sets a limit on the number of nested expressions that will be evaluated. Valid values are 25…500000 with default 5000. If you … Read more
The message indicates that the last line of the file doesn’t end with an End Of Line (EOL) character (linefeed (\n) or carriage return+linefeed (\r\n)). The original intention of this message was to warn you that the file may be incomplete; most datafiles have an EOL character as the very last character in the file. … Read more