Merge pull request #560 from USACE/dss-py

nodata simplification

Author: Enovotny

async_packager/src/cumulus_packager/writers/dss7.py

@@ -123,10 +123,7 @@ def writer(
                 # Flip the dataset up/down because tif and dss have different origins
                 data = numpy.flipud(data)
                 DSS_UNDEFINED_VALUE = -3.4028234663852886e+38
-                data = numpy.array(data, dtype=numpy.float64)
-                numpy.putmask(
-                    data, data == nodata, numpy.nan
-                )  # Replace nodata with NaN for processing
+                data[data == nodata] = numpy.nan # Replace nodata with NaN for processing
                 # GeoTransforma and lower X Y
                 xsize = warp_ds.RasterXSize
                 ysize = warp_ds.RasterYSize