image thumbnail


version 1.0 (7.52 KB) by Yongjian Feng
Utility to manipulate ReqIF documents. Change attribute values and add spec-relations

1 Download

Updated 25 Sep 2021

From GitHub

View license on GitHub

MATLAB utility for Requirements Interchange Format (ReqIF) files

This is a MATLAB® class for manipulating ReqIF™ documents. ReqIF stands for Requirements Interchange Format. It is an important format that enables data exchange between requirement management tools.

With ReqIfUtil, you can

  • open a ReqIF document
  • get basic information like count of SpecObjects, Specifications, and SpecRelations
  • find SpecObject using attribute name and attribute value
  • change an attribute value of a SpecObject
  • add a SpecRelation between SpecObjects


Open and Save

To open a ReqIF document, instantiate a ReqIfUtil object with the filename. Here the sample ReqIF "ReqsAndLinks.reqif" is used for example:

reqif = ReqIfUtil('ReqsAndLinks.reqif');

To save a copy, call this:


Basic information of ReqIf

To get basic information of the opened ReqIF document:

numSpecObjs = reqif.getSpecObjCount();
numSpecRelations = reqif.getSpecRelationCount();
numSpecifications = reqif.getSpecificationCount();

Find SpecObjects

Find SpecObjects using attribute name and attribute value. For example, ReqIF.ChapterName is in general mapped to requirement summary. This sample code looks for SpecObjects that have "ReqIF.ChapterName" as "Req1"

specObjs = ReqIfUtil.find(reqif, 'ReqIF.ChapterName', 'Req1');

Change attribute value of a SpecObject

ReqIfUtil.setValue(specObjs{1}, 'ReqIF.ChapterName', 'ReqNew');

Add a SpecRelation

Assume that you found the two SpecObjects (source being specObj1, and target being specObj2) using the find methods above or you just pick two. Now you want to add a SpecRelation:

reqif.addLink(specObj1, specObj2, 'Implement');

How to get started

First copy the ReqIfUtil.m and ReqsAndLinks.reqif to your working directory.

% construct a ReqIfUtil object by providing a reqif file
reqif = ReqIfUtil('ReqsAndLinks.reqif');
% find two spec-objects
specObj1 = ReqIfUtil.find(reqif, 'ReqIF.ChapterName', 'Req5');
specObj2 = ReqIfUtil.find(reqif, 'ReqIF.ForeignID', ':6');
% Add a link from specObj1 to specObj2 named "Implement"
reqif.addRelation(specObj1{1}, specObj2{1}, 'Implement');
% save a new copy

Please refer to testReqIfUtil.m for more examples of using ReqIfUtil.

Cite As

Yongjian Feng (2021). ReqIfUtil (, GitHub. Retrieved .

MATLAB Release Compatibility
Created with R2021b
Compatible with any release
Platform Compatibility
Windows macOS Linux

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.