Use the Data Analyzer node to look at the data. On the 2nd pin of the Data Analyzer, on the far right, are lines of code that can be used to manipulate the data.
Copy that code into a Transform node...
Add " default emit * " as the LAST line of the code in the Transform node
Then, remove any lines of code where you do NOT want the transformation performed, and you can also edit the transformations in any manner you wish.