MATLAB: How to merge two Simulink Requirement sets to create a general requirements coverage and report

Question

I have a device which consists of two modules: A and B. These modules are rather independent, so they are designed and developed separately. There is a requirements list (in plain text) for the entire device.

I wrote a script which makes two Requirement Sets (SLREQX) for A and B separately. So each has its own "ReqSet" and achieve 100% requirements coverage. To achieve this, the requirements are linked to each model – and Simulink saves these links to files named "model_name.slmx".

But after these two models are finished, I want to generate the general requirements report for the whole device with both models together. Therefore, how do I merge these Requirements sets (to obtain a general Requirement set for the entire device) and re-allocate links in SLMX files from particular "ReqSets" to the general "ReqSet"?

Answer 1

The solution to this depends on the MATLAB version you are using. For MATLAB R2019a, please refer to example code attached '*testReqSetMerge.m*'. This file includes a function '*testReqSetMerge*' that combines two Requirement sets and updates the links. At the top of the function inside the file, there is a commented example on how you can use the function with two sample models, '*vdp*' and '*my_sfcar*'.

In short, the script takes the following arguments:

• The name for the new combined ReqSet.
• A cell array of ReqSet objects or character vector names for all linked ReqSets.
• A cell array of LinkSet objects or character vector names of the linked models.
• TRUE or FALSE for whether to delete original links (optional argument).

In MATLAB R2020a, the function '*link.setDestination()*' allows to implement this in an easier way:

https://www.mathworks.com/help/slrequirements/ref/slreq.link.setdestination.html