 Usage:  {delt,alphahat,lim,hd}=adedis(z,x,y,h,hfac,c0,c1)  
 
 Input:

  z                      n x d1 matrix , the observed discrete explanatory variables 
                         
  x                      n x d2 matrix , the observed continuous explanatory variables 
                         
  y                      n x 1 matrix , the observed response variable 
                         
  h                      d2 x 1 or 1 x 1 matrix , bandwidth for dwade etimation 
                         
  hfac                   scalar, to scale bandwidth for estimation of the link function 
                         
  c0,c1                  scalars , monotonicity constants 
                         
 Output:

  delta                  d2 x 1 matrix, the density weighted average 
                         derivative estimates of the coefficients of 
                         the elements of x. 
                         
  alphahat               d1 x 1 matrix, the estimates of the coefficients of 
                         the elements of z. 
                         
  lim                    2 x 1 matrix, the limits of integration corrsponding to the 
                         parameters v0 and v1 in the paper of Horowitz and Haerdle. 
                         
  hd                     d3 x 1 matrix , bandwidth for estimation of the link function 
                         for each of the d3 distinct values of the matrix z 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
