/************************************************************************/
/*                                                                      */
/*        Copyright 2008-2009 by Rahul Nair and Ullrich Koethe          */
/*                                                                      */
/*    This file is part of the VIGRA computer vision library.           */
/*    The VIGRA Website is                                              */
/*        http://hci.iwr.uni-heidelberg.de/vigra/                       */
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/*        vigra@informatik.uni-hamburg.de                               */
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/************************************************************************/

#include <iostream>
#include <set>
#include <vigra/matlab.hxx>
#include "random_forest_impex.hxx"

using namespace vigra;
using namespace matlab;
using namespace rf;
using namespace visitors;


void vigraMain(matlab::OutputArray outputs, matlab::InputArray inputs){
    /* INPUT */
    if (inputs.size() != 2)
        mexErrMsgTxt("Two inputs required.");

    // get RF object
    RandomForest<> rf; 
    matlab::importRandomForest(rf, matlab::getCellArray(inputs[0]));

    // get feature matrix
    MultiArrayView<2, double> features = inputs.getMultiArray<2, double> ( 1, v_required());
    if(rf.ext_param_.column_count_ != columnCount(features))
        mexErrMsgTxt("Feature array has wrong number of columns.");

    /* OUTPUT */
    MultiArrayView<2, double> probs = outputs.createMultiArray<2, double>(0, v_required(),
                                                                MultiArrayShape<2>::type(rowCount(features), 
                                                                                         rf.ext_param_.class_count_));

    rf.predictProbabilities(features, probs);

}




/***************************************************************************************************
**         VIGRA GATEWAY                                                                          **
****************************************************************************************************/
inline void vigraMexFunction(vigra::matlab::OutputArray outputs, vigra::matlab::InputArray inputs)
{
    vigraMain(outputs, inputs);
}
/** Matlab
function probs = vigraPredictProbabilitiesRF(RF, features)

Use a previously trained random forest classifier to predict labels for the given data
    RF        - MATLAB cell array representing the random forest classifier
    features  - M x N matrix, where M is the number of samples, N the number of features

    probs     - M x L matrix holding the predicted probabilities for each of
                the L possible labels
*/
