set data style linespoints;plot '/tmp/tc.txt' using 1:2 title 'X_civ1', '/tmp/tc.txt' using 1:3 title 'Y_civ1', '/tmp/tp.txt' using 1:2 title ' set data style linespoints;plot '/home/gauthier/CIV_test/test_Errors_civ1.dat' using 1:2 title 'X','/home/gauthier/CIV_test/test_Errors_civ1.dat' using 1:3 title 'Y'