The Statistics and Histogram function is used to define the statistics and histogram of a raster. You can insert this function at the end of the function chain to describe the statistics and histogram of a raster function template (RFT). This may be needed to control the default display of the processing result, especially when defining a function chain that contains many functions. You can define statistics by typing the values or importing from a raster dataset or an XML file. Histograms can only be defined by importing a file.