Calculating in a String array

[labmaster]

Dear

My string array will be transformed to a floating type array.

Some element of the string array has no value(just "Empty").

In this case, I believe I have to treat the special case (for example, in average calculation).

In earlier LV version, NaN (0 / 0) is useful technique.

But what is the technique in LV8 for my purpose?

Lee

[altenbach]

If NaN was fine in earlier LabVIEW versions, do the same in LabVIEW 8.0.

[labmaster]

Thanks,

NaN technique is not proper in calculating standard deviation or average, which can take an array as a inut.

The result is NaN if the array include one NaN.

Therefore I have to exclude NaN elements by a temporary array in my calculating.

Am I right?

[altenbach]

Yes, it all depends on the problem.

Only you can decide if omitting all values containing NaN will be a valid and reasonable operation. Usually the presence of NaN means something. What if all values are NaN? Do you know why some values are NaN?

[labmaster]

In my case, I used NaN as an invalid measurement result by assigning to an "empty" string element in array.

Therefore, I didn't include them to my calculating some mathematics as well as the total number of index of the array.

Thank you so much.