gnuplot plotting multiple line graphs

Question

I have the following dat file  named ls dat     Gnuplot script file for  ls    Version       Removed Added   Modified 8 1     0       0       0 8 4     0       0       4 8 5     2       5       9 8 6     2       7       51 8 7     2       7       51 8 8     2       7       51 8 9     2       7       51 8 10    2       7       51 8 11    2       8       112 8 12    2       8       112 8 13    2       17      175 8 17    6       33      213   I am trying to plot with this   plot  ls dat  using 1 2 title  Removed  with lines         ls dat  using 1 3 title  Added  with lines         ls dat  using 1 4 title  Modified  with lines   This produces the following graph     What I am expecting is three line plots which should all go up  but at different rates  Can anyone see what is going on here  I m sure it must be something very silly

User · Answer

In addition to the answers above the command below will also work. I post it because it makes more sense to me. In each case it is 'using x-value-column: y-value-column'

plot 'ls.dat' using 1:2, 'ls.dat' using 1:3, 'ls.dat' using 1:4

note that the command above assumes that you have a file named ls.dat with tab separated columns of data where column 1 is x, column 2 is y1, column 3 is y2 and column 4 is y3.

User · Answer

andyras is completely correct   One minor addition  try this  for example   plot  ls dat  using 4 xtic 1    This will keep your datafile in the correct order  but also preserve your version tic labels on the x-axis

User · Answer

I think your problem is your version numbers   Try making 8 1 --  8 01  and so forth   That should put the points in the right order   Alternatively  you could plot using X  where X is the column number you want  instead of using 1 X   That will plot those values on the y axis and integers on the x axis   Try   plot  ls dat  using 2 title  Removed  with lines          ls dat  using 3 title  Added  with lines          ls dat  using 4 title  Modified  with lines

User · Answer

Whatever your separator is in your ls dat  you can specify it to gnuplot   set datafile separator   t

[gnuplot] gnuplot plotting multiple line graphs

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