I would like to do what has been beautifully described on the following blog. The issue is that I currently have FME2013SP1 and the blog is using newer transformers (NullAttributeMapper and newer functionality of FeatureMerger)
http://fme-memorandum-takashi.blogspot.ca/2014/02/merge-two-lists-so-that-elements-will.html
I am looking for suggestions on how to get the same results but by using what is available in FME2013SP1 (until I am able to get 2014 installed).
Thank you
Best answer by takashi
Assuming you've created two data flows based on the original dataset, features on both flows have ID and List{}. ID contains unique identifier of each original feature.
One possible way is:
-----
1st flow:
Explode the list with the ListExploder, and then modify _element_index:
_element_index = _element_index * 2
The index will be 0, 2, 4, 6, ...
2nd flow:
Explode the list with the ListExploder, and then modify _element_index:
_element_index = _element_index * 2 + 1
The index will be 1, 3, 5, 7, ...
Send those flows to the same Sorter; sort features by ID and _element_index.
You can then build the required list with the ListBuilder or other appropriate transformer (Group By: ID).
-----
Hope this helps.
Takashi
Assuming you've created two data flows based on the original dataset, features on both flows have ID and List{}. ID contains unique identifier of each original feature.
One possible way is:
-----
1st flow:
Explode the list with the ListExploder, and then modify _element_index:
_element_index = _element_index * 2
The index will be 0, 2, 4, 6, ...
2nd flow:
Explode the list with the ListExploder, and then modify _element_index:
_element_index = _element_index * 2 + 1
The index will be 1, 3, 5, 7, ...
Send those flows to the same Sorter; sort features by ID and _element_index.
You can then build the required list with the ListBuilder or other appropriate transformer (Group By: ID).
-----
Hope this helps.
Takashi
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