Your LimeSurvey version: Cloud Version 6.15.22
Own server or LimeSurvey hosting: LimeSurvey hosting in Germany
Survey theme/template: (inherit) vanilla
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Hello everyone,

There is an issue that I cannot resolve.

I have a question with three answers, let's call them Y, N and NU.
There are several sub-questions, each making a row. Thus, each row has the column Y, N and NU.
I have used the question type Array/numbers so that all inputs are checkboxes.

I would like to make Y and N mutually exclusive while NU remains unaffected, such that (Y;NU) and (N;NU) are valid answers for each sub-questions but not (Y;N). This may take the form of an error message if both Y and N are selected for the same sub-question or of an automatic unchecking of Y or N when either is being checked next in the same sub-question.

I understand that I cannot use javascript to resolve this since I am on the free plan.
I have tried to use the question validation feature with something like this:
sum(
    if(!is_empty(Q1_SQ001_SQ004.NAOK) and !is_empty(Q1_SQ001_SQ005.NAOK), 1, 0),
    if(!is_empty(Q1_SQ002_SQ004.NAOK) and !is_empty(Q1_SQ002_SQ005.NAOK), 1, 0),
    if(!is_empty(Q1_SQ003_SQ004.NAOK) and !is_empty(Q1_SQ003_SQ005.NAOK), 1, 0)
) == 0

In the above example, my sub-questions have the codes SQ001-3 and the answers have the codes SQ004-6; I have checked the survey with the inspect element and these were the correct names being used. I have tried different versions of the above example to account for a potential misuse of functions but in all cases the survey indicates that the question hasn't been properly answered and refuses to terminate even though I would only select theoretically valid answers during trial.

I don't know if there is something that I am missing or if the precise feature isn't available to me. I have checked the manual and the forum (using my own keywords) and haven't found a similar issue.

I'll be happy to receive precisions, a working answer, a simpler alternative or be pointed to a similar resolved case.

Thank you.

Hi, a solution could be:
Code the x-axis like
E1: Y
E2: N
U3: NU
Now you can use the variable "self" to only select the exclusive columns (therefore "E")
And with "Y01", "Y02", ... as codes of the y-axis the question validation expression is
(linefeed only for clarity)


I did not check your approach for errors.
In such cases you'd better send the lss export of the relevant questions.

Joffm

Hi,

I don't want to hijack your question, but I encounter a similar problem. I only want one exclusive columun, but as you, I can't use javascript. I have tried multiple codes in the validation equation (using count, sum, and various other ways to express what I want), and none of them seem to have any effect. Any help is welcome!

Printemps wrote:

I understand that I cannot use javascript to resolve this since I am on the free plan.

JavaScript can be used on all plans if you disable the XSS filter.

- www.limesurvey.org/manual/Global_settings/en