Principle Components Analysis table_calculus QgsProcessingParameterFeatureSource|TABLE|Table|5|None|False QgsProcessingParameterEnum|METHOD|Method|[0] correlation matrix;[1] variance-covariance matrix;[2] sums-of-squares-and-cross-products matrix QgsProcessingParameterNumber|NFIRST|Number of Components|QgsProcessingParameterNumber.Integer|3|False|None|None QgsProcessingParameterVectorDestination|PCA|Principle Components