Sir,I want to implment a function called kdistribution .I am nt understanding hw to giv input & cal the function x,plz help me.thank u & also tel me how to convert floating point values of mean to integr or unsignedint values.

function [m,b,y]= kdist(x)
im=imread('D:\envisatcrop.tif');
imtool(im);
l=1;
v=1;
a=gamma(l);
b=gamma(v);
winsize=32;
r = 1;
[maxrows,maxcols]=size(im);
m=zeros(winsize,winsize);
k=floor(winsize/2);
for rownum = 1:maxrows
  rowlowerbound = rownum - k;
  rowupperbound = rownum +  k;
  if rowupperbound > maxrows
      rowupperbound = maxrows;
  end
  if rowlowerbound < 1
      rowlowerbound =1;
  end
  c = 1;
  for colnum = 1:maxcols
      collowerbound = colnum -  k;
      colupperbound = colnum +  k;
      if colupperbound > maxcols
          colupperbound = maxcols;
      end
      if collowerbound < 1
          collowerbound =1;
      end
d=im(rowlowerbound:rowupperbound, collowerbound:colupperbound);
m (r,c)= mean2(d);
c=c+1;   
  end
  r=r+1;
end
imtool(m);
imwrite(m,'D:\kdisenvisat.tif');
e=2*(sqrt(l*v*x/m));
f=besseli(-0.5,e);
plot(f);
y=(2/(x*a*b))*((L*v*x/m)^(L+v/2))*(f);
end