Nprinting 17 ignoring selected values in qvw ?

[curiousfellow]

In Nprinting I created a report from a qvw that uses variables in expressions.(set analysis)

In Nprinting 17 I cannot find any possibilities to use this variable in a filter.

It looks like Nprinting 17 does not use the selected listbox values so the variable does not gets the right value.

Is there another way to get a value to this variable ?

[Lech_Miszkiewicz]

Hi,

what is in your listbox text? number or dual value (text & number - for example month (Jan for text or 1 for number)

make sure you use filters according to their types: see this for detailed information (slightly differnet topic but i guess your problem is datatype when trying to apply filter):

https://community.qlik.com/message/1268669?et=watches.email.thread#1268669

also make sure your variable expression starts with "=" sign so it can get evaluate on each selection.

cheers

Lech

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[curiousfellow]

In my listbox there is an expression :

=if(Period_num > 0 ,if(Period_num < 13,Period_num))

Then I have a variable selected_period : max(period)

In my qvw I have two expressions using selected_period :

Sum({$<Period_num = {"<= $(selected_period)"}>}[amount]) 

and

Sum( if(Period_num = $(selected_period),[amount],0))

The qvw works fine, and I would not like to have to rebuild it ofr Nprinting.

I think the problem is that in Nprinting the variable selected_period does not get a value ?

[Lech_Miszkiewicz · Accepted solution]

Hi - My comments in RED (sorry - bit messy)

In my listbox there is an expression :

=if(Period_num > 0 ,if(Period_num < 13,Period_num))

(why dont you create in you datamodel "new field" which already has this condition calculated (so it will only contain values and records linked to values from 1-12)? and then apply NPrinting filter on it using simple =max("newfield"))

Then I have a variable selected_period : max(period)

(is it max(period) ??? where is period coming from? is it another field?

or it is max(Period_num)?

i would suggest to use following: selected_period : =max(newfield) - notice"=" sign before my variable, which evaluates variable on each "click"

In my qvw I have two expressions using selected_period :

Sum({$<Period_num = {"<= $(selected_period)"}>}[amount])

and

Sum( if(Period_num = $(selected_period),[amount],0))

(this will then work without issues)

The qvw works fine, and I would not like to have to rebuild it ofr Nprinting.

I think the problem is that in Nprinting the variable selected_period does not get a value ?

like i said

• simplify it!
• create new field calcualted in datamodel  if(Period_num > 0 ,if(Period_num < 13,Period_num)) as newfield
• change your variable to be selected_period : =max(newfield)

cheers

Lech

[curiousfellow]

You are absolutely right. However, this is one of the first app I made, and I would do it on a different way nowadays.

But the qvw works fine, and I don't like to have to rebuild it just for Nprinting.

[Lech_Miszkiewicz]

Well,

maybe someone else will have an idea how to provide a solution you need. I am running out of options

In my opinion required change does not have any effect on what you have build so far, and it is just an additional field really. which removes expression from your listbox and is used in variable which you have anyway.

Variable will then work inside expression used in your charts, and it will work in NPrintign too.

my opinion is: to always improve whatever  can be improved,

[curiousfellow]

I followed your suggestion. And now it works like it should.

Thnx

[Lech_Miszkiewicz]

good on you!

cheers

LM