3 Using images in non-NDF formats

If you want to read an image in one of the formats handled by the Convert package, just start up Convert before running EXTRACTOR and specify the image with an appropriate extension. For example:

  % convert
     CONVERT commands are now available
     Defaults for automatic NDF conversion are set.
     Type conhelp for help on CONVERT commands.
     Type "showme sun55" to browse the hypertext documentation.
  % extractor
  CONFIG - Configuration file /’$EXTRACTOR_DIR/config/default.sex’/ >
  IMAGE - Input image /’image’/ > image.fit

will use the FITS file image.fit, automatically converting it to a temporary NDF file and then reading the temporary file.