Unique ID for repeats

Support
1

Hi,

Im a beginner with ODK so bare with me.

I want to associate every repeat in my repeat group with a number that is essentially "Parent_index.Repeat_index".

trying to include these numbers as part of a unique ID of each chart.

Any idea how to generate this? I was trying to mess with position(), or count(), but those kept coming up as zero. wasnt sure what to put in the parentheses. Tried to mess around with indexed-repeat as well but had no idea what i was doing.

Thanks,
Arram

2

The position (or count) of an element within a repeat group would be position(.) - notice the dot.

In general, the dot means "this variable". For example as in the the "constraint" column, . >= 5 means "this variable must be greater or equal to 5"

3

Francis,

You are correct about the dot meaning this variable, but if you are
inside a repeat, you'll need position(..) not position(.)

I try to also generate UUIDs for my repeats because positions can
change if you add/delete repeat instances. To do that, I have a
calculate field with a calculation of 'once(uuid())'

You can see an example of the above at
https://groups.google.com/d/msg/opendatakit/M_pERTptaA4/ltWOFzpWCQAJ.

Yaw

ยทยทยท On Thu, May 25, 2017 at 6:35 AM, wrote: > The position (or count) of an element within a repeat group would be position(.) - notice the dot. > > In general, the dot means "this variable". For example as in the the "constraint" column, . >= 5 means "this variable must be greater or equal to 5" > > -- > -- > Post: opendatakit@googlegroups.com > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > Options: http://groups.google.com/group/opendatakit?hl=en > > --- > You received this message because you are subscribed to the Google Groups "ODK Community" group. > To unsubscribe from this group and stop receiving emails from it, send an email to opendatakit+unsubscribe@googlegroups.com. > For more options, visit https://groups.google.com/d/optout.