Can lineOffSet find last occurance?
bvlahos at jpl.nasa.gov
Fri Aug 30 13:25:01 EDT 2002
I need to process a subset of lines in a field which has been sorted.
All of the group of lines I want are together because of the sort. What
I'm doing now is using a repeat for each line command and checking each
line to see if it contains what I'm looking for. This works fine but
will eventually slow down with big data sets. I would like to use the
repeat for each feature which includes the starting and ending lines.
The lineOffSet command neatly finds the first line of what I want but
how can I find the last line? Can lineOffSet be made to start and the
I could leave the check for what I want and exit the handler after
starting at the offset but it should be faster if I could remove the
check. I am confident that the sorting will put what I want together.
Another option would be to put the field into a variable and then
filter the variable and do the processing on what remains. I don't know
how much of a performance hit the putting and filtering would be. This
lineOffSet command seems pretty fast.
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