36      std::vector<double> 
LowPass(std::vector<double> invec, 
int boxsize);
 
   37      std::vector<double> HighPass(std::vector<double> invec1, std::vector<double> invec2);
 
   38      std::vector<double> HighPass(std::vector<double> pdInVector1, std::vector<double> pdInVector2, 
 
   39             std::vector<int> piValidPntsVector, 
int piMaxPoints, 
const QString & psMode=
"SUBTRACT");