Add rows to a 2D array until I have allways the same

[A.Daniel01]

Hi,

I have a 2D array with data from a sensor, the rows for example starts in 1000 but then starts to decrease cause there are no data. How can I have allways the same rows with for example 0 or NaN or something like that?

Here I have a 2D array and a counter in the first. 

[GerdW]

Hi A.,

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@A.Daniel01 wrote:

I have a 2D array with data from a sensor, the rows for example starts in 1000 but then starts to decrease cause there are no data. How can I have allways the same rows with for example 0 or NaN or something like that?

Here I have a 2D array and a counter in the first. 

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Why do "rows start to decrease"?

Why do you want "always the same rows"?

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• Please attach a simplified example VI to show your problem.
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[Yamaeda]

You can use Initialize array with e.g. 1000 elements of NaN, -1 or similar and then use Replace Array to replace part of it.

[altenbach]

• When you say "starts at 1000", are you talking about the size? (# of rows? # of columns?)
• What are the two dimensions of the 2D array?
• How many rows and how many columns? What is fixed and what is variable?
• Which dimension gets smaller?
• Why can't you merger the "counter" scalar inside the loop? Are you sure the value is not stale?
• You are using concatenating tunnels, so the number of rows can be variable and things will fall into place without array gymnastics. Whatever you are currently doing does not look reasonable.
• Do you want to stop the loop once you have a certain number of accumulated values?
•  

Can you attach a simplified version your code that simulates typical data?

[altenbach]

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@altenbach wrote:

• Whatever you are currently doing does not look reasonable.

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Here's equivalent code (green) compared to yours(red). Both give the same result, but obviously it's not what you want.

Once we know what you actually want, we can modify accordingly.