I have this little data set Dropbox - lip.csv - Simplify your life that I would like to represent on a barplot with cumulative percentages. For every condition there are three replicates. On the x axis, the four conditions should appear. And on the y axis I want the percentage. So for every condition I should have a bar containing cumulative percentages of my following colums ("Lip_pas", "Lip_peu", "Lip_bcp").
What have you tried so far? what is your specific problem?, we are more inclined towards helping you with specific coding problems rather than doing your work for you.
Could you please turn this into a self-contained REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.
If you've never heard of a reprex before, you might want to start by reading this FAQ: