Array initialization problem

[Pavel_47]

Hello,

I want to initialize array "Fitting Parameter Initialization" once VI starts (using Value Signaling prioperty).

Doesn't work. Upon VI start "Fitting Parameter Initialization" keep its old value.

Thanks in adavnce 

[GerdW · Accepted solution]

Hi Pavel,

your property nodes have their label hidden - this is extremely distracting. Think about "code documentation"…

Why do you need a "value signalling" property? Why not use a simple local variable?

[Pavel_47]

Indeed, with local variable it works.

Thanks.

P.S. BTW why with signaling property it didn't

[sankar06]

Why you are using Value Signaling Property. You can simply use Value property or local variable of the array.

[Pavel_47]

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sankar06 a écrit :

Why you are using Value Signaling Property. You can simply use Value property or local variable of the array.

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Frankly speaking I have no consistent answer to your question.

For some issue in the past only "Value Signalling" property could do the job (Local variable failed).

I don't remember what setup I used at that moment, but since I privilege "Value Signaling" for assigned values to controls.

But anyway, in this particular case ... why "Value Signaling" doesn't work ?

Thanks

[sankar06]

Hi Pavel 

Actualy it working fine in my test code. I dnt know the reason why it is not working in your VI. The Value signaling property is used to generate the value change event programticaly.

[Pavel_47]

Can you, please, put your image.

Thanks.

[sankar06]

[Pavel_47]

Ok,

It seems that it works due to "error chain", that introduces continuity of events, e.g. first array is initialized, then while loop starts.

Without "error chain" it will not work, isn't it ?

[GerdW]

Hi Pavel,

without error chain it may work or it may fail - it's a typical race condition!

By now you should have learned to THINK DATAFLOW!