How to define a new function?

[#1]

Hi all,

since I have a complex calculation that I reuse in charts, I would like to put into a variable the results of the calculation, but I would like to define dinamically the set of values of the fields on which to perform the calculation.

It looks like defining a new function: is it possible (perhaps using set Analysis in variable definition)?

Thanks in advance!

[rwunderlich · Accepted solution]

You can define a variable as an expression that uses parameter placeholders. See the section "Dollar-Sign Expansion with Parameters" in the Ref Guide.

For example

SET myfunc= $1 + $2;

$(myfunc(3,4)) = 7

See also the attached example from the QV Cookbook.

-Rob

[#3]

Thanks a lot Rob!

It's very useful and very clear!

Roberta