r.describe Prints terse list of category values found in a raster layer. Raster (r.*) QgsProcessingParameterRasterLayer|map|input raster layer|None|False QgsProcessingParameterString|null_value|String representing NULL value|*|False|True QgsProcessingParameterNumber|nsteps|Number of quantization steps|QgsProcessingParameterNumber.Integer|255|True|1|None QgsProcessingParameterBoolean|-r|Only print the range of the data|False QgsProcessingParameterBoolean|-n|Suppress reporting of any NULLs|False QgsProcessingParameterBoolean|-d|Use the current region|False QgsProcessingParameterBoolean|-i|Read floating-point map as integer|False QgsProcessingParameterFileDestination|html|Categories|Html files (*.html)|report.html|False