parameter must specify a logical value. What is a logical value?

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Hi, I've got the following problem with Simulink Design Verifier. I'm trying to extract a subsystem with the sldvextract function. Doing that, I get the following error message:
Error using sldvextract (line 57)
Invalid usage of sldvextract. The showModel parameter must specify a logical value.
Error in SLDV_TestGeneration (line 30)
newModel = sldvextract('Test_Harness_Verification_small/WMS Water Management', false);
I also tried true, I also tried 0, I also tried 'false', nothing worked. Perhaps I just don't see the failure. Can you help me?

Answers (3)

Wayne King
Wayne King on 31 May 2012
a logical value would be
x = logical(0);
x = logical(1);
or
x = false;
x = true;
You do not want to put 'false', that is just a string.
  2 Comments
Max
Max on 31 May 2012
I recognize that. But look at the parameters I give to sldvextract. It's exactly
false
Walter Roberson
Walter Roberson on 31 May 2012
Out of curiosity, try specifying logical(0) -- I'm just thinking that maybe "false" has been given a different value in your context.

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Walter Roberson
Walter Roberson on 31 May 2012
true and false should be valid according to the documentation

Max
Max on 31 May 2012
logical(0) works...
Is that an incident I should report?
  1 Comment
Walter Roberson
Walter Roberson on 31 May 2012
If logic(0) works that suggest that "true" and "false" have been assigned something at that point. Can you display class(true) and size(true) ? And search the section to see if they were somehow defined in an obvious way?

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