FIT_MAXITER = 10
set angles radians
s(x) = a * sin(2*pi*f/10000*x - p ) + o
f = 200
a = 220
o = 513
p = 1
fit s(x) 'dds_test_1.dat' using 1:17 via p
#plot "dds_test_1.dat" using 1:17 with linespoints, s(x)
#pause -1
fit s(x) 'dds_test_1.dat' using 1:17 via p,a
#plot "dds_test_1.dat" using 1:17 with linespoints, s(x)
#pause -1
FIT_MAXITER = 20
fit s(x) 'dds_test_1.dat' using 1:17 via p,a,o,f
#plot "dds_test_1.dat" using 1:17 with linespoints, s(x)
#pause -1