Hi,
I am a very new user of Root and I have been stuck on importing data from a single column txt file for a long time. I am trying to use TGraph and the code goes:
TGraph my_graph(“filename”,"%lg %lg")
my_graph->Draw(“CA”)
Because my original txt file contains only one column of data, I used excel to added another column of index (time) and saved it as txt. However, I could not read one point from the txt file using the code above.
If I add the extra column of time manually, the code works alright. I assume excel somehow messed up the format but I don’t know how I could import the data. Thank you for any help!