load floor1.txt;
f11=floor1(:,1);
%f12=floor1(:,2);
f11average=mean (f11);
f11std=std(f11);
x=0:0.01:max(f11);

%f12average=mean (f12);
count1=0;count2=0;
for i=min(f11):0.1:max(f11)
  count1=count1+1;
  a=find(f11==i); 
  F11(count1)=length(a);
end
%for j=min(f12):0.1:max(f12)
  %count2=count2+1;
  %b=find(f12==j); 
  %F12(count2)=length(b);
%end
figure(1)
i=min(f11):0.1:max(f11);
stem(i,F11,'r');

%figure(2)
%j=min(f12):0.1:max(f12);
%stem(j,F12,'b');