I have a text file containing data like this:
Date Hour Data
2014/01/01 00 5
2014/01/01 01 10
2014/01/01 02 7
2014/01/01 03 6
.
.
.
2014/01/01 23 4
2014/01/02 00 6
2014/01/02 01 9
2014/01/02 02 2
.
.
.
I want to plot the file in gnuplot with "Data" on y axis and "Hour" on x axis which I know how to do that. I also want that when "Hour" value is "00" (or at the changing of dates) the related "Date" appears on the x axis instead of "Hour". any idea?