RasterResampler

Resamples an input raster using the desired dimensions, the desired cell size in ground units, or a percentage of the size.

Parameters

Raster Size

Size Specification

To resize the input raster by dimensions, select RowsColumns.

To resize the input raster by cell size, select CellSize.

To resize the input raster by percentage, select Percentage.

Number of Columns/Number of Rows

Enter values when RowsColumns is selected.

X Cell Spacing/Y Cell Spacing

Enter values when CellSize is selected.

Percentage

Specify a percentage. For example, if the input raster is 1000 rows by 800 columns and this is set to 50 percent, the resulting raster will be 500 rows by 400 columns.

Interpolation

Interpolation Type

Cell values are interpolated in order to change the raster to the specified size. You can choose from these interpolation methods.

• Nearest Neighbor is the fastest but produces the poorest image quality.
• Bilinear provides a reasonable intermediate option.
• Bicubic is the slowest but produces the best image quality.
• Average 4 and Average 16 have a performance similar to Bilinear and are useful for numeric rasters such as DEMs.

Usage Notes

This transformer is unaffected by raster band and palette selection.

Example

Editing Transformer Parameters

Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Transformer Categories

Rasters

FME Licensing Level

FME Professional edition and above

Technical History

Associated FME function or factory: @ResampleRaster

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Tags Keywords: raster grid band channel reproject resample upsample downsample "nearest neighbor" "nearest neighbour" bilinear bicubic average interpolate resize