function [c,hits,xc,yc]=bincon(w)
w=denan(w);
dx=.5;
xb=[-15.5:dx:15.5];
yb=xb;
axis('square')
if(length(w)>6*60),
 w=shot(w,1,1/24);
 [a,hits,xc,yc]=binsort(real(w),imag(w),real(w),xb,yb);
 hits=hits/(dx*dx);
 hits=smooth2d(hits);
 c=contour(hits,[.10 .30 .50 .70 .90],xc,yc);
end

