How can we use AttributeCreator which receives an array of data to only pull the last index of that array?
Userlevel 2
+16
- Contributor
- 2180 replies
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25 April 2018
If you are talking about lists in FME: The ListElementCounter will count the number of elements in a specified list. The highest index is the result of the ListElementCounter -1 (lists start at 0).
Userlevel 5
- 8182 replies
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25 April 2018
If it's an attribute list, you can use the following functions in an AttributeCreator.
To get the last index of _list{}:
@Evaluate(@NumElements(_list{})-1)To get the last value of _list{}:
@Value(_list{@Evaluate(@NumElements(_list{})-1)})Userlevel 5
- 8182 replies
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25 April 2018
Finally, you can use a ListIndexer with index set to -1 (=last element).
Here's an example of what the array looks like:
capture.png
200 results contain 213 attributes of this array. I would like to get the last index of each of those arrays/nested arrays. For example, if d:ArrayOfanyType{1}.anyType{11} is the last array for d:ArrayOfanyType{1}, I want to get its value.
I hope this is clear, let me know if you need more clarification.
+7
- Contributor
- 311 replies
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22 June 2018
If it's an attribute list, you can use the following functions in an AttributeCreator.
To get the last index of _list{}:
@Evaluate(@NumElements(_list{})-1)To get the last value of _list{}:
@Value(_list{@Evaluate(@NumElements(_list{})-1)})
+7
- Contributor
- 311 replies
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22 June 2018
Posted an idea to allow use of negative numbers to get list elements from the end of list e.g. _list{-3}:
https://knowledge.safe.com/idea/72944/use-negative-numbers-to-get-list-element-from-end.html
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