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Hi,

I am trying to make a flow where among other tasks I have to move some areas from one table to another and remove duplicates ID's for areas, but keep 

in 2 attributes a list of blocks (names and ID's) - like in pic attached.

I thought I had a solution by using a Dissolver and put those values of ID's in a list, then using a ListConcatenator I could put them in desired new attributes.

 

First issue I discovered is that the Dissolver didn't removed the duplicates (or not all of them) and BLOCKID and BLOCKNAME doesn't contain all values.

 

Can you give me an idea on how to fix this issue?

 

Thanks.

Nicu group_by

Meanwhile, solved the issue with ListBuilder (group by Area ID) and ListConcatenators.

 

The Dissolver will only work on areas that have the same ID (i.e. the same values for the attributes you select for the Group By) and overlap or share a boundary. If they're disjoint it won't do anything.

 

Instead of the Dissolver you can use the Aggregator, which also has the option to create lists.

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