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xmgrace

Xmgrace: plot function of data

How can I plot a function of data with xmgrace?

Let's say I have a 3-columns file and I want to plot the sum of 2nd and 3rd column as a function of the 1st. With gnuplot, I can just do

p "file.dat" u 1:($2+$3)

How can I do the same thing with xmgrace?

Solution 
  • awk '{print $1, ($2 + $3)}' file.dat | xmgrace -pipe &

    Example: Plot data for y = x^2 + 4

    Contents of file.dat:

    0 0 4
1 1 4
2 4 4
3 9 4
4 16 4
5 25 4
6 36 4

    Output (after modifying styles):

    Plot of y = x^2 + 4