visualization - Isosurface in matlab does not work -

visualization - Isosurface in matlab does not work -

hi trying utilize isosurface command patch:

l=im{10}; l=l./max(l(:)); x=0:(size(l,1)-1); y=0:(size(l,2)-1); z=0:(size(l,3)-1); [x y z]=meshgrid(y,x,z); figure p=patch(isosurface(x,y,z,l,1,'facecolor','b'));

so l has value's 1 , 0 , not displaying surface correctly @ all. gives empty white figure. l same size meshgrid if help me out awesome

matlab visualization