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Format

Initial Graphics Exchange Specification (IGES)

Download XML

Summary

Name
Initial Graphics Exchange Specification (IGES)
Version
5.x
Identifiers
  • MIME: model/iges
  • PUID: x-fmt/158
Format type
Model
Description
Initial Graphics Exchange Specification, or IGES, establishes information structures for the digital representation and exchange of product definition data. It supports exchanging this data among Computer-Aided Design and Computer-Aided Manufacturing (CAD and CAM, respectively) systems. IGES defines file structure and language formats to represent geometric, topographical, and non-geometric product definition data. These formats are independent of the modeling method used, and they support data exchange using physical media or electronic communication protocols.
File extensions
iges, igs
Source
The National Archives and Records Administration / The National Archives and Records Administration

Internal signatures

Initial Graphics Exchange Specification

Note
Offset 72 bytes, then section identification character S for Start section; Columns 74-80, section sequence number 1 preceded by leading blanks or zeros; cr/lf or nl; (Column 73, section identification character S for Start section; Columns 74-80, section sequence number 2 preceded by leading blanks or zeros) or (Column 73, section identification character G for Global section; Columns 74-80, section sequence number 1 preceded by leading blanks or zeros)

Byte sequences

Min Frag Length
Absolute from BOF
Offset
72
Max offset
None
Byte Sequence
53(202020202020|303030303030)31(0D0A|0D|0A){72}(5320202020202032|5330303030303032|4720202020202031|4730303030303031)
Endianness
None

Changelog

  • Updated in V94

    Release date
    17 September 2018

    Initial Graphics Exchange Specification (IGES) 5.x: Added hex value '0D' as variant to new line character in signature. Submitted by the Canadian Centre for Architecture.

  • Updated in V84

    Release date
    21 January 2016

    Initial Graphics Exchange Specification (IGES) 5.x: Added format type 'Model'.

  • Updated in V62

    Release date
    28 August 2012

    Initial Graphics Exchange Specification (IGES): Description information submitted by the National Archives and Records Administration.

  • Updated in V60

    Release date
    11 June 2012

    Initial Graphics Exchange Specification: Existing signature refined through PRONOM Research.

  • Added in V51

    Release date
    15 July 2011

    Initial Graphics Exchange Specification: Signature submitted by Georgia Tech Research Institute, USA.