"[Solved] Generate macro thows error on calculating with macros"

qwertz2

 

Dear all,

 

In a former version of Rapidminer it was possible to calculate with macros inside the "generate macro" operator (e.g. %{macro}+5). However, in the latest version it the latest version it says "must have arguments of type numerical".

 

Of course I could set back compatibility level but I was wondering whether there is another way of transformation as I like to stay on the latest version.

 

Best regards

Sachs

 

 

<?xml version="1.0" encoding="UTF-8"?><process version="7.5.000">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="7.5.000" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="generate_data" compatibility="7.5.000" expanded="true" height="68" name="Generate Data" width="90" x="45" y="34"/>
      <operator activated="true" class="extract_macro" compatibility="7.5.000" expanded="true" height="68" name="Extract Macro" width="90" x="179" y="34">
        <parameter key="macro" value="last"/>
        <list key="additional_macros"/>
      </operator>
      <operator activated="true" class="generate_macro" compatibility="7.5.000" expanded="true" height="82" name="Generate Macro" width="90" x="313" y="34">
        <list key="function_descriptions">
          <parameter key="first" value="%{last}-9"/>
        </list>
      </operator>
      <operator activated="true" class="filter_example_range" compatibility="7.5.000" expanded="true" height="82" name="Filter Example Range" width="90" x="447" y="34">
        <parameter key="first_example" value="%{first}"/>
        <parameter key="last_example" value="%{last}"/>
      </operator>
      <connect from_op="Generate Data" from_port="output" to_op="Extract Macro" to_port="example set"/>
      <connect from_op="Extract Macro" from_port="example set" to_op="Generate Macro" to_port="through 1"/>
      <connect from_op="Generate Macro" from_port="through 1" to_op="Filter Example Range" to_port="example set input"/>
      <connect from_op="Filter Example Range" 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>

MartinLiebig

Hi,

 

have a look at the eval function. this should do the trick.

 

~Martin

qwertz2

Thanks, that worked out well