param view_thinnest;
param view_thickness;
set LINES = {1} union union{k in 0..view_thinnest-1} setof{i in 10..99} round(i/10^(k+2),k+2);
param views{LINES,{'width','red','green','blue'}};

data;
param view_thinnest = 9;
param view_thickness = 6;
model;