Try again DEM interpolation with gdal:warpreproject

[emanuelegissi]

I am testing again the gdal:warpreproject algorithm for interpolation. It is so fast! It can indeed interpolate correctly, but it is fragile. So I added some safety belts: SOURCE_CRS, TARGET_CRS in UTM, TARGET_EXTENT and TARGET_EXTENT_CRS in UTM I hope this is enough and doesn't break in real world cases, otherwise we backtrack.

        alg_params = {
            "INPUT": dem_layer,
            "SOURCE_CRS": dem_layer.crs(),
            "TARGET_CRS": utm_crs,
            "RESAMPLING": 1,
            "NODATA": None,
            "TARGET_RESOLUTION": pixel_size,
            "OPTIONS": "",
            "DATA_TYPE": 0,
            "TARGET_EXTENT": utm_idem_extent,
            "TARGET_EXTENT_CRS": utm_crs,
            "MULTITHREADING": False,
            "EXTRA": "",
            "OUTPUT": DEBUG
            and parameters["UtmInterpolatedDemLayer"]
            or QgsProcessing.TEMPORARY_OUTPUT,
        }
        outputs["Interpolation"] = processing.run(
            "gdal:warpreproject",
            alg_params,
            context=context,
            feedback=feedback,
            is_child_algorithm=True,
        )

[rmcdermo]

OK, please let me know when you feel this is ready for testing and on which repo/branch. Thanks

[emanuelegissi]

Okay, I need a couple of days more. But we are close.

Il mar 22 ago 2023, 15:05 Randy McDermott @.***> ha scritto:

OK, please let me know when you feel this is ready for testing and on which repo/branch. Thanks

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[emanuelegissi]

Done, it works