function flaplacian(f,m)
% This function takes an inline function of the plane and computes
% its values at level m vertex points on a certain embedding of SG
% in the plane (as in an equilateral triangle with boundary points
% (0,0), (1/2,sqrt(3)/2),and (sqrt(3)/2,1/2)), then takes the level
% m laplacian of the resulting function and produces a plot of it.
%
% support functions: laplacian.m
%
% INPUT:
% f - inline function in x and y
% m - the level of SG to work at
%
% OUTPUT:
% plots the level m laplacian of f

coords = funcdefn(f,m) ;
y = coords(:,3) ;
g = ones(3^(m+1),1) ;
l = laplacian(y,g,m) ;
gaskplot(l,m) ;