Sorting repeater on Storyteller by numeric - Encountered NaN value

Simone Bissi

Hi all.

I set a numeric sort order on a field of a repeating block. During testing I get the error: "Numeric sort with XPath 'field_name' encountered NaN value ''."
If I set the sorting as Text type it works instead.
In XMLIN I didn't initially set any function or format for that field. Even if I set the number(.) function in the Value field, however, I get the same error.
Where am I wrong?

Thanks

dba01

Numeric sorting on a repeater requires that every sort value is a valid number.

If that is not the case, you receive the above reported message.

You can try to fix your data, or change the sort key definition like this:
value[number()=number()] | default

Numeric sort turns the value into a number. In case of multiple element in node set, it takes the first value.

To test if value is a valid number in XPath 1.0, AI suggests to use number() = number() condition which is false for NaN.

For default value you can use for example variable $default = 0;