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Identify maximum value by group and tag feature

  • August 22, 2018
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aron
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I have a set of grouped features and want to identify the feature with the highest value in one of the columns, lets call it "MAX_attribute", for each group. I can find the highest value in each group by using the StatisticCalculator. But that only gives me the "MAX_attribute" for the group as an whole, I also need to identify and "tag" the actual feature that had the "MAX_attribute".

To give you an example: I have depth readings for a number of lakes, and now I want to find the deapest reading for each lake.

I also tried the Aggregator with the ListRangeExtractor but could not make it work as I wished.

Best answer by ebygomm

If this is from your earlier scenario, you can create a list in the dissolver. Sorting this list in descending order will mean you can access the feature with the highest attribute

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3 replies

takashi
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  • takashiCelebrity
  • 7842 replies
  • August 22, 2018

Hi @aron, I think the features output from the Complete port of the StatisticsCalculater have you desired attributes.

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
ebygomm
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  • August 22, 2018

If this is from your earlier scenario, you can create a list in the dissolver. Sorting this list in descending order will mean you can access the feature with the highest attribute

aron
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  • aronSupporter
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  • August 24, 2018

If this is from your earlier scenario, you can create a list in the dissolver. Sorting this list in descending order will mean you can access the feature with the highest attribute

Thanks! I got this to work for me!

 

 

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