# Tag Info

In essence, what you want to do is interpolate data: You want to find a function $U(x,y)$ so that $U(x_i,y_i)=u_i$. This is then the function for which you'd like to do draw isocontours. You should take a look at books on numerical methods and search for "two-dimensional interpolation". Among the methods you will find is to triangulate your points \$(x_i,y_i)...