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Writing to file every n iterations, yet unwanted data still present

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Hello,

 

I have a vi (see attached) that writes data to a file every n iterations. If the iteration is a multiple of n, the data are sent to a file; if not, to a dummy array. When I open my data file, I find the data I sent every n iteration but I also find 0's in all the rows that do not contain data from n iterations.

 

Example output if n = 5:

 

0.1

0

0

0

0

0.2

0

0

0

0

 

Could someone help me understand why the memory for these unwanted data points is allocated to my data file?

 

Thank you. 


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