r.fillnulls Fills no-data areas in raster maps using spline interpolation. Raster (r.*) QgsProcessingParameterRasterLayer|input|Input raster layer to fill|None|False QgsProcessingParameterEnum|method|Interpolation method to use|bilinear;bicubic;rst|False|2|False QgsProcessingParameterNumber|tension|Spline tension parameter|QgsProcessingParameterNumber.Double|40.0|True|None|None QgsProcessingParameterNumber|smooth|Spline smoothing parameter|QgsProcessingParameterNumber.Double|0.1|True|None|None QgsProcessingParameterNumber|edge|Width of hole edge used for interpolation (in cells)|QgsProcessingParameterNumber.Integer|3|True|2|100 QgsProcessingParameterNumber|npmin|Minimum number of points for approximation in a segment (>segmax)|QgsProcessingParameterNumber.Integer|600|True|2|10000 QgsProcessingParameterNumber|segmax|Maximum number of points in a segment|QgsProcessingParameterNumber.Integer|300|True|2|10000 QgsProcessingParameterNumber|lambda|Tykhonov regularization parameter (affects smoothing)|QgsProcessingParameterNumber.Double|0.01|True|0.0|None QgsProcessingParameterRasterDestination|output|Filled