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Referencing filtered array values with Expression Manager

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2 years 6 months ago - 2 years 6 months ago #111426 by duvemyster
QFA is a filtered array, for which rows R1, R2, and R3 may or may not exist.

Where C1 is the first column, I'd like to utilize QFA_R1_C1, QFA_R2_C1, and QFA_R3_C1 in Expression Manager equations. However, these variable are only defined if their row is displayed.

Creating a hidden equation type question for each such value can achieve variables that are always defined whether or not their rows exist (i.e., Code: FORR3C1 | Question:{QFA_R3_C1} | and then utilize {FORR3C1} instead of {QFA_R3_C1} in subsequent EM formulas.)

But this can get to be a lot of expression type questions for larger arrays.

Question: Is there another way to ensure that {QFA_R3_C1} is always defined whether or not row R3 is filtered?
Last Edit: 2 years 6 months ago by duvemyster.

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2 years 6 months ago #111439 by tpartner
Try:
{QFA_R3_C1.NAOK}

Cheers,
Tony Partner

Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
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2 years 6 months ago #111457 by duvemyster
Awesome. Thank you. Yes, that works.

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2 years 6 months ago #111461 by tpartner
No problem.

For the benefit of others, NAOK stands for "not applicable okay" and should always be used for variables from questions that may not be shown due to relevance or conditions.


.

Cheers,
Tony Partner

Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.

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2 years 6 months ago #111690 by david2013
Should we always use qcode.NAOK ? Is it there any situation that we should only use qcode (no .naok)?

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2 years 6 months ago #111712 by Mazi
It makes sense to always use .NAOK. I am not aware of any drawbacks.


Best regards/Beste Grüße,
Dr. Marcel Minke
(Limesurvey Head of Support)
Need Help? We offer professional Limesurvey support
Contact: marcel.minke(at)survey-consulting.com'"
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