prtRvMultinomial  Multinomial random variable
 
    RV = prtRvMultinomial creates a prtRvMultinomial object
    with an unknown number of categories with unspecified probabilities
    These properties can be set manually or by using the MLE method.
 
    prtRvMultinomial operates on count matrices. Therfore, the DRAW()
    method outputs a matrix that is N x nCategories and has a single 1
    in each row. To draw integer categories you can use the
    DRAWINTEGER() method.  Similarly, the MLE function takes a count
    matrix as an input. Type help prtRvMultinomial.mle for more
    information.
 
    RV = prtRvMultinomial(PROPERTY1, VALUE1,...) creates a
    prtRvMultinomial object RV with properties as specified by 
    PROPERTY/VALUE pairs.
 
    A prtRvMultinomial object inherits all properties from the
    prtRv class. In addition, it has the following properties:
 
    nCategories   - number of integers modeled by the RV
    probabilities - A 1 x nCategories vector of doubles less than 1
                    that sum to 1, representing the probability of
                    each of the integers
    
   A prtRvMultinomial object inherits all methods from the prtRv
   class. The MLE  method can be used to set the parameters from data.
   In addition, it has the the following methods:
    
    x = R.drawIntegers(N) - Draws N integers with the corresponding
                            probabilities
 
   Example:
   
   data = rand(100,5);                  % Uniformly random data
   X = bsxfun(@eq,data,max(data,[],2)); % Generate data that has a 
                                        % single 1 in each row
 
   RV = prtRvMultinomial;               % Generate a prtRvMultinomial
   RV = mle(RV,X);                      % Estimate the parameters
 
   RV.plotPdf()                         % Plot the pdf (pmf)