how do I create a maximum or minimum value during continuous acquisition?

[trannh]

Here's an image of the problem I'm having. It's not letting me create a constant on that wire. That is the 1-D array waveform that I'm writing to the file. What seems to be the problem?

[altenbach]

As I said just above, attach an actual VI instead if an image.

I can easily create constants on arrays of waveforms. What is your LabVIEW version?

[trannh]

Labview 7.1

[altenbach]

Well, LabVIEW 7.1 is ancient. Works just fine in LabVIEW 2012.

 

[trannh]

Unfortunately, I think this is the only version we have in lab. I will try to see if we can update it. But if not, is there any alternatives that could work as well?

[altenbach]

I am sure you can program your way around it. What is the purpose of the constant?

[trannh]

I'm not sure what you mean by constant. I'm still don't quite understand why a constant should be wired there. I completely understand when you said that I'm writing as an array, but am trying to read it as double, and that's where the error lies. I'm just not sure what the constant is for. Again, thank you for taking the time to help me out. I'm brand new to Labview and things are still confusing and I truly appreciate your time.

[billko]

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@trannh wrote:

I'm not sure what you mean by constant. I'm still don't quite understand why a constant should be wired there. I completely understand when you said that I'm writing as an array, but am trying to read it as double, and that's where the error lies. I'm just not sure what the constant is for. Again, thank you for taking the time to help me out. I'm brand new to Labview and things are still confusing and I truly appreciate your time.

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You tell me - you're the one who mentioned it:

"Here's an image of the problem I'm having. It's not letting me create a constant on that wire. That is the 1-D array waveform that I'm writing to the file. What seems to be the problem?"

[billko]

"Here's an image of the problem I'm having. It's not letting me create a constant on that wire. That is the 1-D array waveform that I'm writing to the file. What seems to be the problem?"

[suchit0012]

you can use peak detector for finding maximum and minimum value of contious graph..of any signal.