/*!
Main MATLAB interface
@param[in,out] nlhs Number of left hand (output) matrices.
@param[in,out] plhs Pointers to left hand (output) matrices.
@param[in] nrhs Number of right hand (input) matrices.
@param[in] prhs Pointers to right hand (input) matrices.
*/
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
//persistence and data variables
Persistence1D p;
std::vector<float> data;
//Variables to store persistence results
std::vector<int> minIndices;
std::vector<int> maxIndices;
std::vector<TPairedExtrema> pairs;
float gminValue;
int gminIndex;
//Assumption: Vector data lives in phrs[0]
//Any deviation from this is not tolerated.
//prhs - right hand - input - MATLAB standard naming convention
//plhs - left hand - output
if (!CheckInput(nlhs, plhs, nrhs, prhs)) return;
#ifdef _DEBUG
mexPrintf("Copying input data...\n");
#endif
WriteInputToVector(prhs, data);
#ifdef _DEBUG
WriteVectorToMexOutput(data);
#endif
#ifdef _DEBUG
mexPrintf("Running Persistence1D...\n");
#endif
p.RunPersistence(data);
#ifdef _DEBUG
mexPrintf("Done.\n");
mexPrintf("Getting results...\n");
#endif
p.GetPairedExtrema(pairs, NO_FILTERING , MATLAB_INDEXING);
gminIndex = p.GetGlobalMinimumIndex(MATLAB_INDEXING);
gminValue = p.GetGlobalMinimumValue();
p.GetExtremaIndices(minIndices, maxIndices, NO_FILTERING, MATLAB_INDEXING);
#ifdef _DEBUG
mexPrintf("Done.\n");
mexPrintf("Writing results to MATLAB...\n");
#endif
plhs[0] = VectorToMxSingleArray(minIndices);
plhs[1] = VectorToMxSingleArray(maxIndices);
plhs[2] = VectorToMxSingleArray(pairs);
plhs[3] = ScalarToMxSingleArray(gminIndex);
plhs[4] = ScalarToMxSingleArray(gminValue);
#ifdef _DEBUG
mexPrintf("Done.\n");
#endif
return;
}
int main()
{
//Create some data
vector< float > data;
data.push_back(2.0); data.push_back(5.0); data.push_back(7.0);
data.push_back(-12.0); data.push_back(-13.0); data.push_back(-7.0);
data.push_back(10.0); data.push_back(18.0); data.push_back(6.0);
data.push_back(8.0); data.push_back(7.0); data.push_back(4.0);
//Run persistence on data - this is the main call.
Persistence1D p;
p.RunPersistence(data);
//Get all extrema with a persistence larger than 10.
vector< TPairedExtrema > Extrema;
p.GetPairedExtrema(Extrema, 10);
//Print all found pairs - pairs are sorted ascending wrt. persistence.
for(vector< TPairedExtrema >::iterator it = Extrema.begin(); it != Extrema.end(); it++)
{
cout << "Persistence: " << (*it).Persistence
<< " minimum index: " << (*it).MinIndex
<< " maximum index: " << (*it).MaxIndex
<< std::endl;
}
//Also, print the global minimum.
cout << "Global minimum index: " << p.GetGlobalMinimumIndex()
<< " Global minimum value: " << p.GetGlobalMinimumValue() << endl;
/*
Note that filtering and printing can also be done with one single function call:
p.PrintResults(10);
*/
return 0;
}
