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Boolean Value in Variable Set for Release 0.7

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ziye.xu

13 Jan, 2017 07:24 PM

Hi Chris,

We notice that if a variable set is loaded, the boolean value can change from "True/False" to numeric numbers 0/1 in the variable display window. It would be nice if the boolean value can be consistent.

Thanks,
Ziye

1. Support Staff 1 Posted by Christopher Sta... on 18 Jan, 2017 02:46 PM

   

   Hi Ziye,

   I am not able to reproduce the problem you describe. Can you send me a copy of the variable set XML file that you're using? You can find the file in

   $HOME/Documents/MWorks/Experiment Storage/_path_to_your_experiment/Saved Variables
   

   Also, what is the name of the variable whose displayed value is changing?

   Thanks,
   Chris

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2. 2 Posted by Ziye Xu on 18 Jan, 2017 06:55 PM

   

   Hi Chris,

   Both the experiment and variable are attached.

   Thanks,

   Ziye

   • Test.xml 10.3 KB
   • Lego_unity.xml 122 KB
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3. Support Staff 3 Posted by Christopher Sta... on 18 Jan, 2017 08:22 PM

   

   Hi Ziye,

   Thanks for the files. Can you tell me the name of a variable whose value you've seen switch from true/false to 0/1?

   Thanks,
   Chris

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4. 4 Posted by Ziye Xu on 18 Jan, 2017 08:58 PM

   

   For example, "doOnlyMaxDiff" is defined as Boolean in experiment file but in the saved variable xml, it's integer. I think that's why it showed up as 0/1 after loading. It's not clear to me why it was saved as different data type. When I tried to make it as True/False in variable display window, it would still be numeric. It seems the only way to do it is to change the variable set xml file in text editor.

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5. Support Staff 5 Posted by Christopher Sta... on 19 Jan, 2017 03:56 PM

   

   Hi Ziye,

   Thanks for the additional info.

   For example, "doOnlyMaxDiff" is defined as Boolean in experiment file but in the saved variable xml, it's integer. I think that's why it showed up as 0/1 after loading.

   Yes, that's correct.

   When I tried to make it as True/False in variable display window, it would still be numeric.

   More specifically, if you try to change 0 to false or 1 to true, the value will still be numeric. However, if you change 0 to true or 1 to false, then the value will become boolean.

   The reason for this is that, before assigning a newly-entered value to a variable, the variables window first checks whether the new value is equal to the old value. If it is, then no assignment is made. In MWorks' view, true is equal to 1 (and false to 0), so attempting to replace the former with the latter results in no change. However, if you first change 1 to false, and then change false to true, the final value will be boolean.

   I see how this behavior can be confusing and/or annoying. It should be pretty straightforward to fix. I'll add it to my to-do list.

   Cheers,
   Chris

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6. Christopher Stawarz closed this discussion on 31 Jan, 2017 03:37 PM.

7. Support Staff 6 Posted by Christopher Sta... on 11 Sep, 2017 03:00 PM

   

   Hi Ziye,

   This issue is fixed in the current MWorks nightly build. In the variables window, you can now change 0 to true or 1 to false, and the type change will persist.

   Cheers,
   Chris

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8. Christopher Stawarz closed this discussion on 18 Sep, 2017 01:58 PM.