I am trying to calculate AUDPC for my dataset. I needed to reshape my data first using the code in the second picture but it is giving me an error as shown.
It really is difficult to figure out what is going on from a screenshot. We really need some sample data.
A handy way to supply sample data is to use the dput() function. See ?dput. If you have a very large data set then something like head(dput(myfile), 100) will likely supply enough data for us to work with.
BTW if you do a str(dat) I expect all of your variables that start with a number such as 13-Jul will have been read in as X13-Jul. R is not happy with variable names that start with a numbur.
For further reference, you might find this helpful.