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sum columns ??

eselvaeselva Member Posts: 2 Contributor I
edited November 2018 in Help
i new in rapidminer, but  i dont know how to sum or average one column

Answers

  • mschmitzmschmitz Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,055  RM Data Scientist
    Hi,

    you can do this using the aggregate operator. It works similar to the aggregate in SQL.

    ~Martin
    - Head of Data Science Services at RapidMiner -
    Dortmund, Germany
  • eselvaeselva Member Posts: 2 Contributor I
    i cant it.  I just sum one colum? how?
  • mschmitzmschmitz Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,055  RM Data Scientist
    Hi eselva,

    try out the process below. This should illustrate it.

    Martin

    <?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <process version="6.5.002">
      <context>
        <input/>
        <output/>
        <macros/>
      </context>
      <operator activated="true" class="process" compatibility="6.5.002" expanded="true" name="Process">
        <process expanded="true">
          <operator activated="true" class="retrieve" compatibility="6.5.002" expanded="true" height="60" name="Retrieve Sonar" width="90" x="45" y="120">
            <parameter key="repository_entry" value="//Samples/data/Sonar"/>
          </operator>
          <operator activated="true" class="aggregate" compatibility="6.5.002" expanded="true" height="76" name="Aggregate" width="90" x="179" y="120">
            <list key="aggregation_attributes">
              <parameter key="attribute_1" value="sum"/>
            </list>
          </operator>
          <connect from_op="Retrieve Sonar" from_port="output" to_op="Aggregate" to_port="example set input"/>
          <connect from_op="Aggregate" from_port="example set output" to_port="result 1"/>
          <portSpacing port="source_input 1" spacing="0"/>
          <portSpacing port="sink_result 1" spacing="0"/>
          <portSpacing port="sink_result 2" spacing="0"/>
        </process>
      </operator>
    </process>
    - Head of Data Science Services at RapidMiner -
    Dortmund, Germany
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