====== Raster Summary ======

This class was created to provide a summary of the main statistics of a list of Rasters. It includes, for each band, the //histogram//, //maximum// and //minimum// values, //mean// (average) values, and //standard deviation// of pixel values. Internally, it computes the histogram of the band, and all the other values are extracted directly from the histogram, therefore it is a faster way to get basic statistics of a Raster.

The class //RasterSummaryManager// is a singleton that can be used to store the statistics of Rasters, without the need to perform repeated computations.

The following code shows how to use this class:

<code c++>
// suppose 2 rasters are available
te::rst::Raster* myraster1 = ...
te::rst::Raster* myraster2 = ...

// now the user needs to retrieve mean values from both rasters (band 0), multiple times
const unsigned int nband = 0;
te::rst::RasterSummary* rsummary1 = te::rst::RasterSummaryManager::getInstance().get(myraster1, te::rst::SUMMARY_MEAN);
te::rst::RasterSummary* rsummary2 = te::rst::RasterSummaryManager::getInstance().get(myraster2, te::rst::SUMMARY_MEAN);

double mean;
std::vector<double> means(100);
for (unsigned int i = 0; i < 100; i++)
{
  mean = rsummary1->at(nband).m_meanVal;
  means[i] += mean;

  mean = rsummary2->at(nband).m_meanVal;
  means[i] += mean;
}
</code>