arrays as coefficients

#!/usr/bin/env gnuplot
stats "data.dat" using 1 nooutput
N = STATS_records
array A[N]
array B[N]
stats "data.dat" using (A[$0+1] = $1, B[$0+1] = $2, 0) nooutput
plot for [i=1:N] A[i] * x + B[i] title sprintf("%d * x + %d", A[i], B[i]) with lines