fmeobjects.FMERasterTools.mosaic

FMERasterTools.mosaic(inputRasters, parms)

Mosaics multiple rasters into one raster. There are some assumptions of the inputRasters:

• Same coordinate system.

• Same number of selected bands.

• Same band interpretation in each group of bands to be mosaicked when there is no palette.

• Same number of selected palettes, either 0 or 1.

• Same band nodata value or NULL when there is no palette.

• Same value interpretation in the selected palette.

• Same palette nodata value or NULL where there is a palette.

• When compositing using alpha, each raster has exactly one alpha band.

• When overlapping values is set to average, sum, or composite_using_alpha palettes are not supported.

Parameters:

• inputRasters (list[FMERaster]) – Rasters to mosaic.

• parms (dict[str, str]) – (Optional) Specifies name-value pairs representing additional parameters.

Possible parms are :

kFME_Mosaic_overlappingValues

Specifies how output cell values will be calculated when multiple rasters overlap.

• kFME_Mosaic_overlappingValues_last

  • (Default) The last value.

• kFME_Mosaic_overlappingValues_min

  • The minimum value.

• kFME_Mosaic_overlappingValues_max

  • The maximum value.

• kFME_Mosaic_overlappingValues_average

  • The average of all values.

• kFME_Mosaic_overlappingValues_sum

  • The sum of all values.

• kFME_Mosaic_overlappingValues_compositeUsingAlpha

  • Values will be blended based on the alpha band.

kFME_Mosaic_nodataOverwrite

• Yes or No (Default is No)

• Specifies whether a nodata value can overwrite an existing real data value when they overlap. Only applies when mosaic_overlappingValues = last.

kFME_Mosaic_mergePalettes

• Yes or No (Default is No)

• Specifies how palettes will be treated when present. When set to Yes, selected palettes will be merged to create a single palette for the output band. When set to No, selected palettes will be accumulated on the output band without modification.

Return type:

FMERaster

Returns:

The mosaicked raster.

Raises:

FMEException – An exception is raised if an error occurred.