で試してみる
v = -2:0.05:2; [x,y] = meshgrid(v); ineq = (x.^2 + y.^2 < 1) .* (x>0) .* (y>0); f = double(ineq); surf(x,y,f); axis equal; view(0,90);
で試してみる
v = -2:0.05:2; [x,y] = meshgrid(v); ineq = (x.^2 + y.^2 < 1) .* (x>0) .* (y>0); f = double(ineq); surf(x,y,f); axis equal; view(0,90);