function plotlimit(H,L,O,C,price,days)
%  suppose we place a limit order to sell at limit prices 
%  vol is the annual volatility of the stock and price is the current price. 
% vol is output from estvol
% assumes we input Open, Close, High, Low, daily prices and the price
%limit order is good for ____ days.
vol=estvol(H,L,O,C,1/252)
r=.05   ;% annual interest rate
x=price+[0:.5:5];
mu=(r-vol^2/2)*days/252;    sig=sqrt(days*vol^2/252);
p=min(1,2*normcdf(-log(x./price),mu,sig));
%x  are the limit points  and p are the corersponding probability of order filled.
% plots the values of x versus p  or the value of the probability of the order being filled for
% each limit price
bar3(x,p)
axis([0 .5 min(x)-1 max(x)+1 0 1])
colormap([0 .9 0])
ylabel('LIMIT POINTS FOR SELL ORDER')
zlabel('PROBABILITY ORDER FILLED')