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pnmtoddif(1) [minix man page]

pnmtoddif(1)                                                  General Commands Manual                                                 pnmtoddif(1)

Name
       pnmtoddif - Convert a portable anymap to DDIF format

Syntax
       pnmtoddif pnmtoddif [-resolution x y] [pnmfile [ddiffile]]

OPTIONS

       resolution x y The horizontal and vertical resolution of the output image in dots per inch. Defaults to 78 dpi.

       pnmfile        The filename for the image file in pnm format.  If this argument is omitted, input is read from stdin.

       ddiffile       The filename for the image file to be created in DDIF format.  If this argument is omitted, the ddiffile is written to stan-
                      dard output. It can only specified if a pnmfile is also specified.

DESCRIPTION

       pnmtoddif takes a portable anymap from standard input and converts it into a DDIF image file on standard output or the specified DDIF file.

       pbm format (bitmap) data is written as 1 bit DDIF, pgm format data (greyscale) as 8 bit greyscale DDIF, and ppm format data is  written  as
       8,8,8 bit color DDIF. All DDIF image files are written as uncompressed. The data plane organization is interleaved by pixel.

       In  addition  to  the  number of pixels in the width and height dimension, DDIF images also carry information about the size that the image
       should have, that is, the physical space that a pixel occupies. PBMPLUS images do not carry this information, hence it has to be externally
       supplied.  The default of 78 dpi has the beneficial property of not causing a resize on most Digital Equipment Corporation color monitors.

AUTHOR

       Burkhard Neidecker-Lutz
       Digital Equipment Corporation, CEC Karlsruhe
       neideck@nestvx.enet.dec.com

                                                                                                                                      pnmtoddif(1)

Check Out this Related Man Page

DOTS(5) 							File Formats Manual							   DOTS(5)

Name
       DOTS - Data Object Transport Syntax (DOTS) files

Description
       Data  Object  Transport	Syntax	(DOTS)	is  DDIS/ASN.1 encoding for encapsulating the encoded interchange form of a number of related data
       objects.  Data objects must be related by having embedded references to other objects in the same  DOTS	encapsulation.	 Typically,  these
       embedded  references depend on the storage address (for example, filename) of the referenced object.  Therefore, when the referenced object
       is moved from one location to another, the storage address must be updated.

       The purpose of DOTS is to allow composite data objects to be moved from one location to another as a single object and to allow the  neces-
       sary storage reference to be updated as part of the process.

       The  primary  use for DOTS is moving multifile compound documents in which one DDIF or DTIF file may have reference data stored in a physi-
       cally separate file.  Mail is a major vehicle for moving DOTS objects.

       The commands and are used to pack and unpack DDIF and DTIF files.  The commands can also be used to copy a related  set	of  DDIF  or  DTIF
       files, or both, from one location to another.

See Also
       ctod(1), dtoc(1), DDIF(5), DTIF(5), DDIS(5), CDA(5)

																	   DOTS(5)
Man Page