gvSIG-Desktop 1.9. User manual

Raster layers can be exported to other raster formats through the Save As dialog. You can access this dialog from the drop-down toolbar, selecting the option "Export to Raster" on the left button and "Save As" on the drop-down button on the right. Make sure that the name of the raster layer that you want to export is set as the current layer in the text box.

Export to Raster - Save as

When selecting the option Save As, a file browser window will open where you can select the output file. On the right side of this dialog there is usually a control panel with various saving options. This control panel will look different depending on the driver for the selected output format, because every format has specific options. For some output formats there are no controls.

File selection dialog for Save As tool

Some of the most common options for the different formats are:

• Sliding bar labeled as "Compression" or "Quality": for formats with compression. The sliding bar is used to specify the extent to which the output image is to be compressed. The compression will affect the quality of the output image.
• Tfw: When this checkbox is ticked, a text file with georeferencing information will be generated. Depending on the input format, the extension of the georeferencing text file will be .tfw, jpgw or .wld.
• Interleave: the band interleaving of the output image; by pixel or by band. Some applications may require interleaving by pixel, and others interleaving by band to display the output image correctly.
• Compression: for formats such as .TIF there are several compression methods to choose from (LZW, Packbits, or Deflate)
• Photometric: photometric interpretation (RGB, CMY, ...) to be assigned to the result.

(Export raster formats are .TIF, .IMG, .BMP, .PGM, .PPM, .MPL, .RST, .JP2, .JPG, and .PNG)