The package img::tiff is a sub-package of
Img. It can be loaded as a part of the
complete Img support, via package require Img,
or on its own, via package require
img::tiff.
Like all packages of Img it does
not provide new commands, but extends the existing Tk command image so that it supports files containing raster
images in the Tagged Image File Format (tiff). More specifically img::tiff extends Tk's photo image
type.
The name of the new format handler is tiff.
This handler provides new additional configuration options. See
section TIFF
OPTIONS for more detailed explanations.
Image data in tiff format (options -data
and -file) is detected automatically.
The format name tiff is recognized by the
option -format. In addition the value for the
option is treated as list and may contain any of the special
options listed in section TIFF OPTIONS.
The handler provides two options to influence the writing of a
TIFF image. There are no options to influence the
reader.
-compressiontype
This option specifies the type of compression to use when
writing TIFF data. It has to be one of none,
jpeg, packbits, or deflate. The default is none.
-byteordertype
This option specifies the byteorder to use when writing TIFF
data. It has to be one of bigendian, littleendian, network, smallendian, or the empty string. The default is the
empty string.
The values bigendian and network are aliases of each other, as are littleendian and smallendian.