Trying to import csv file The file structure is Date 2/11/2012 0.00165 2/15/2012 0.01215 2/16/2012 0.00126 But the program gives "label strings can't be consistent dates treating these as undated data" Choosing restructure the file with time series would alter the existing date Another question is what is the command to layer many series on gnuplots ignoring the scaling or display other series scale on right or left axis