virtual float processNineCellWindow(float *x11, float *x21, float *x31, float *x12, float *x22, float *x32, float *x13, float *x23, float *x33)=0
Calculates output value from nine input values.
QgsNineCellFilter(const QString &inputFile, const QString &outputFile, const QString &outputFormat)
Constructor that takes input file, output file and output format (GDAL string).