Add value only when true

Question

hi I am making an array with the iteration values of for loop by chechking the conditions and i want it to be done only when my condition is true.
But now what is hapenning is that if the condition is false 0 is over wirrting my values.
And also i have put two for loops inside a for loop.
the second for loop is running to the first loop iterations.
thanks in advance
 I am adding the vi i have made .
@nk
Attachments:
get excel data.vi ‏37 KB
get excel data.vi ‏37 KB

Answer 1

Hi @nk
That's because you have set "Use default if unwired" on the output tunnel of the Case Structure.
Hence if the condition is true, it will only output an array of only 1 iteration value at the output tunnel of the most inner For Loop
And if the condition is false, it will output an array with default value of 0 at the output tunnel of the most inner For Loop.
Also, it seems that 2nd For Loop does not have the auto-indexing feature enabled in the output tunnel, which only generate a 2D array, instead of 3D array in the Array 3 indicator. I wonder if generating 2D array output for the Array 3 indicator is what you want, but if you want to generate 3D array output, you should enable the auto-indexing feature for the 2nd For Loop.
And what you also should do is using the auto-indexing with conditional tunnel in the inner For Loop to automatically generate an array of iteration values if the elements in array is greater than the max value you've set as shown in the screenshot below for simple illustration.
Here is the link for more information about auto-indexing with conditional tunnel: http://zone.ni.com/reference/en-XX/help/371361K-01/lvhowto/condacc_valuesnloops/
Ee Lim
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