I am trying toB remove attributeB values in a listB based on a frequency parameter.

Is this possibleB in XSLT 2? I cannot see how to tackle theB problemB without being able to store the last attributeB value addedB to the result tree so that I can compare against it for the following attribute values? I am told that there is no way to query the result tree and so I am at a loss as to whether XSLT can actually do what I require?

To illustrate, please see the example below.

The frequencyB parameter is 30. I would like to remove all values that are "within 30" of the last value used. If the first value is 0 then I would like to remove all the following attribute values that are less than 30 plus the last value added to the result tree (in this case 0).

for tumbling window $w in p/Content
start $s when true()
end next $n when xs:decimal($n/@value) - xs:decimal($s/@value) ge 30
return ($w[1], subsequence($w, 2)/<Content value=""/>)