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How to generate a Scree Plot

Currently writing a paper, would like to generate a SCREE PLOT to identify the dimensions to choose in a PCA analysis

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Hey @febpriv_01,

Scree plot is used to capture %variation explained for every PC. You can use PCA to Example set operator and plot proportion of variance to achieve it.

Image: https://us.v-cdn.net/6038102/uploads/editor/ds/2yzo0yvoabpv.png

Also, the XML code of mock process.

<?xml version="1.0" encoding="UTF-8"?><process version="9.6.000">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="9.6.000" expanded="true" name="Process">
    <parameter key="logverbosity" value="init"/>
    <parameter key="random_seed" value="2001"/>
    <parameter key="send_mail" value="never"/>
    <parameter key="notification_email" value=""/>
    <parameter key="process_duration_for_mail" value="30"/>
    <parameter key="encoding" value="SYSTEM"/>
    <process expanded="true">
      <operator activated="true" class="retrieve" compatibility="9.6.000" expanded="true" height="68" name="Retrieve Sonar" width="90" x="45" y="34">
        <parameter key="repository_entry" value="//Samples/data/Sonar"/>
      </operator>
      <operator activated="true" class="principal_component_analysis" compatibility="9.6.000" expanded="true" height="103" name="PCA" width="90" x="246" y="85">
        <parameter key="dimensionality_reduction" value="keep variance"/>
        <parameter key="variance_threshold" value="0.95"/>
        <parameter key="number_of_components" value="1"/>
      </operator>
      <operator activated="true" class="converters:pca_2_example_set" compatibility="0.6.000" expanded="true" height="82" name="PCA Result to ExampleSet" width="90" x="380" y="187"/>
      <connect from_op="Retrieve Sonar" from_port="output" to_op="PCA" to_port="example set input"/>
      <connect from_op="PCA" from_port="example set output" to_port="result 1"/>
      <connect from_op="PCA" from_port="preprocessing model" to_op="PCA Result to ExampleSet" to_port="pca"/>
      <connect from_op="PCA Result to ExampleSet" from_port="exa" to_port="result 2"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
      <portSpacing port="sink_result 3" spacing="0"/>
    </process>
  </operator>
</process>

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