deleting 0's from an attribute

IljaDeCosterIljaDeCoster Member Posts: 7 Contributor II
edited November 2018 in Help
Dear,

With in a proces i created an nominal attribute with examples like:
0001
0110
1010
0011
0111
1111
...

I would like to change this attribute deleting all the 0's before the first 1 (while keeping the 0's after the first 1). So the example should look like:
1
110
1010
11
111
1111
...

I tried with the replace operator and a regular axpression, but It seems I don't find the right one...

Thanks a lot,
Ilja



Answers

  • MariusHelfMariusHelf RapidMiner Certified Expert, Member Posts: 1,869 Unicorn
    The Replace operator is the way to go. Please post your process setup so we can have a look at what is going wrong.

    Best regards,
    Marius
  • IljaDeCosterIljaDeCoster Member Posts: 7 Contributor II
    So I was right to try with the replace operator. In that case my main issue would be to find the right regular expression - It seems I do have some issues to build them. And manuals on that?

    I add the process here: 

    <?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <process version="5.3.000">
      <context>
        <input/>
        <output/>
        <macros/>
      </context>
      <operator activated="true" class="process" compatibility="5.3.000" expanded="true" name="Process">
        <process expanded="true" height="431" width="748">
          <operator activated="true" class="retrieve" compatibility="5.3.000" expanded="true" height="60" name="Retrieve DvW_werkdata_DAFnaanalyse3 (2)" width="90" x="45" y="30">
            <parameter key="repository_entry" value="DvW_werkdata_DAFnaanalyse3"/>
          </operator>
          <operator activated="true" class="format_numbers" compatibility="5.3.000" expanded="true" height="76" name="Format Numbers" width="90" x="179" y="120">
            <parameter key="attribute_filter_type" value="subset"/>
            <parameter key="attributes" value="|DAFstatusY01|DAFstatusY02|DAFstatusY03|DAFstatusY04|DAFstatusY05|DAFstatusY06|DAFstatusY07|DAFstatusY08|DAFstatusY09|DAFstatusY10|DAFstatusY11|DAFstatusY12|DAFstatusY13|DAFstatusY14|DAFstatusY15|DAFstatusY16|DAFstatusY17|DAFstatusY18|DAFstatusY19|DAFstatusY20"/>
            <parameter key="format_type" value="integer"/>
            <parameter key="locale" value="Dutch (Belgium)"/>
          </operator>
          <operator activated="true" class="subprocess" compatibility="5.3.000" expanded="true" height="76" name="Creating churncode carriere" width="90" x="313" y="120">
            <process expanded="true" height="541" width="701">
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (2)" width="90" x="45" y="30">
                <parameter key="first_attribute" value="DAFstatusY01"/>
                <parameter key="second_attribute" value="DAFstatusY02"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation" width="90" x="179" y="30">
                <parameter key="first_attribute" value="DAFstatusY03"/>
                <parameter key="second_attribute" value="DAFstatusY04"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (3)" width="90" x="313" y="30">
                <parameter key="first_attribute" value="DAFstatusY05"/>
                <parameter key="second_attribute" value="DAFstatusY06"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (4)" width="90" x="447" y="30">
                <parameter key="first_attribute" value="DAFstatusY07"/>
                <parameter key="second_attribute" value="DAFstatusY08"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (5)" width="90" x="581" y="30">
                <parameter key="first_attribute" value="DAFstatusY09"/>
                <parameter key="second_attribute" value="DAFstatusY10"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (6)" width="90" x="45" y="120">
                <parameter key="first_attribute" value="DAFstatusY11"/>
                <parameter key="second_attribute" value="DAFstatusY12"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (7)" width="90" x="179" y="120">
                <parameter key="first_attribute" value="DAFstatusY13"/>
                <parameter key="second_attribute" value="DAFstatusY14"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (8)" width="90" x="313" y="120">
                <parameter key="first_attribute" value="DAFstatusY15"/>
                <parameter key="second_attribute" value="DAFstatusY16"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (9)" width="90" x="447" y="120">
                <parameter key="first_attribute" value="DAFstatusY17"/>
                <parameter key="second_attribute" value="DAFstatusY18"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (10)" width="90" x="581" y="120">
                <parameter key="first_attribute" value="DAFstatusY19"/>
                <parameter key="second_attribute" value="DAFstatusY20"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (11)" width="90" x="45" y="255">
                <parameter key="first_attribute" value="DAFstatusY01_DAFstatusY02"/>
                <parameter key="second_attribute" value="DAFstatusY03_DAFstatusY04"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (12)" width="90" x="179" y="255">
                <parameter key="first_attribute" value="DAFstatusY05_DAFstatusY06"/>
                <parameter key="second_attribute" value="DAFstatusY07_DAFstatusY08"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (14)" width="90" x="313" y="255">
                <parameter key="first_attribute" value="DAFstatusY09_DAFstatusY10"/>
                <parameter key="second_attribute" value="DAFstatusY11_DAFstatusY12"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (13)" width="90" x="447" y="255">
                <parameter key="first_attribute" value="DAFstatusY13_DAFstatusY14"/>
                <parameter key="second_attribute" value="DAFstatusY15_DAFstatusY16"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (15)" width="90" x="581" y="255">
                <parameter key="first_attribute" value="DAFstatusY17_DAFstatusY18"/>
                <parameter key="second_attribute" value="DAFstatusY19_DAFstatusY20"/>
                <parameter key="trim_values" value="true"/>
              </operator>
              <operator activated="true" class="rename" compatibility="5.3.000" expanded="true" height="76" name="Rename" width="90" x="45" y="345">
                <parameter key="old_name" value="DAFstatusY01_DAFstatusY02_DAFstatusY03_DAFstatusY04"/>
                <parameter key="new_name" value="DAFChurn1"/>
                <list key="rename_additional_attributes">
                  <parameter key="DAFstatusY05_DAFstatusY06_DAFstatusY07_DAFstatusY08" value="DAFChurn2"/>
                  <parameter key="DAFstatusY09_DAFstatusY10_DAFstatusY11_DAFstatusY12" value="DAFChurn3"/>
                  <parameter key="DAFstatusY13_DAFstatusY14_DAFstatusY15_DAFstatusY16" value="DAFChurn4"/>
                  <parameter key="DAFstatusY17_DAFstatusY18_DAFstatusY19_DAFstatusY20" value="DAFChurn5"/>
                </list>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (16)" width="90" x="179" y="345">
                <parameter key="first_attribute" value="DAFChurn1"/>
                <parameter key="second_attribute" value="DAFChurn2"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (17)" width="90" x="313" y="345">
                <parameter key="first_attribute" value="DAFChurn1_DAFChurn2"/>
                <parameter key="second_attribute" value="DAFChurn3"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (18)" width="90" x="447" y="345">
                <parameter key="first_attribute" value="DAFChurn1_DAFChurn2_DAFChurn3"/>
                <parameter key="second_attribute" value="DAFChurn4"/>
              </operator>
              <operator activated="true" class="generate_concatenation" compatibility="5.3.000" expanded="true" height="76" name="Generate Concatenation (19)" width="90" x="581" y="345">
                <parameter key="first_attribute" value="DAFChurn1_DAFChurn2_DAFChurn3_DAFChurn4"/>
                <parameter key="second_attribute" value="DAFChurn5"/>
              </operator>
              <operator activated="true" class="rename" compatibility="5.3.000" expanded="true" height="76" name="Rename (2)" width="90" x="45" y="435">
                <parameter key="old_name" value="DAFChurn1_DAFChurn2_DAFChurn3_DAFChurn4_DAFChurn5"/>
                <parameter key="new_name" value="DAFChurncarriere"/>
                <list key="rename_additional_attributes"/>
              </operator>
              <operator activated="true" class="generate_attributes" compatibility="5.3.000" expanded="true" height="76" name="Generate Attributes (2)" width="90" x="179" y="435">
                <list key="function_descriptions">
                  <parameter key="DAFChurncodecarriere" value="replace(DAFChurncarriere,&quot;_&quot;,&quot;&quot;)"/>
                </list>
              </operator>
              <operator activated="true" class="select_attributes" compatibility="5.3.000" expanded="true" height="76" name="Select Attributes" width="90" x="313" y="435">
                <parameter key="attribute_filter_type" value="subset"/>
                <parameter key="attributes" value="|DAFstatusY01_DAFstatusY02|DAFstatusY03_DAFstatusY04|DAFstatusY05_DAFstatusY06|DAFstatusY07_DAFstatusY08|DAFstatusY09_DAFstatusY10|DAFstatusY11_DAFstatusY12|DAFstatusY13_DAFstatusY14|DAFstatusY15_DAFstatusY16|DAFstatusY17_DAFstatusY18|DAFstatusY19_DAFstatusY20|DAFChurn1|DAFChurn2|DAFChurn3|DAFChurn4|DAFChurn5|DAFChurn1_DAFChurn2|DAFChurn1_DAFChurn2_DAFChurn3|DAFChurn1_DAFChurn2_DAFChurn3_DAFChurn4|DAFChurn1_DAFChurn2_DAFChurn3_DAFChurn4_DAFChurn5|DAFChurncarriere"/>
                <parameter key="invert_selection" value="true"/>
              </operator>
              <connect from_port="in 1" to_op="Generate Concatenation (2)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (2)" from_port="example set output" to_op="Generate Concatenation" to_port="example set input"/>
              <connect from_op="Generate Concatenation" from_port="example set output" to_op="Generate Concatenation (3)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (3)" from_port="example set output" to_op="Generate Concatenation (4)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (4)" from_port="example set output" to_op="Generate Concatenation (5)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (5)" from_port="example set output" to_op="Generate Concatenation (6)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (6)" from_port="example set output" to_op="Generate Concatenation (7)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (7)" from_port="example set output" to_op="Generate Concatenation (8)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (8)" from_port="example set output" to_op="Generate Concatenation (9)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (9)" from_port="example set output" to_op="Generate Concatenation (10)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (10)" from_port="example set output" to_op="Generate Concatenation (11)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (11)" from_port="example set output" to_op="Generate Concatenation (12)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (12)" from_port="example set output" to_op="Generate Concatenation (14)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (14)" from_port="example set output" to_op="Generate Concatenation (13)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (13)" from_port="example set output" to_op="Generate Concatenation (15)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (15)" from_port="example set output" to_op="Rename" to_port="example set input"/>
              <connect from_op="Rename" from_port="example set output" to_op="Generate Concatenation (16)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (16)" from_port="example set output" to_op="Generate Concatenation (17)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (17)" from_port="example set output" to_op="Generate Concatenation (18)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (18)" from_port="example set output" to_op="Generate Concatenation (19)" to_port="example set input"/>
              <connect from_op="Generate Concatenation (19)" from_port="example set output" to_op="Rename (2)" to_port="example set input"/>
              <connect from_op="Rename (2)" from_port="example set output" to_op="Generate Attributes (2)" to_port="example set input"/>
              <connect from_op="Generate Attributes (2)" from_port="example set output" to_op="Select Attributes" to_port="example set input"/>
              <connect from_op="Select Attributes" from_port="example set output" to_port="out 1"/>
              <portSpacing port="source_in 1" spacing="0"/>
              <portSpacing port="source_in 2" spacing="0"/>
              <portSpacing port="sink_out 1" spacing="0"/>
              <portSpacing port="sink_out 2" spacing="0"/>
            </process>
          </operator>
          <operator activated="true" class="generate_copy" compatibility="5.3.000" expanded="true" height="76" name="Generate Copy" width="90" x="447" y="120">
            <parameter key="attribute_name" value="DAFChurncodecarriere"/>
            <parameter key="new_name" value="DAFChurncodecarriere2"/>
          </operator>
          <operator activated="true" class="order_attributes" compatibility="5.3.000" expanded="true" height="76" name="Reorder Attributes" width="90" x="581" y="120">
            <parameter key="attribute_ordering" value="DAFChurncodecarriere|DAFChurncodecarriere2"/>
          </operator>
          <operator activated="true" class="replace" compatibility="5.3.000" expanded="true" height="76" name="Replace" width="90" x="581" y="210">
            <parameter key="attribute_filter_type" value="single"/>
            <parameter key="attribute" value="DAFChurncodecarriere2"/>
            <parameter key="replace_what" value="&quot;000001&quot;\d[0-9]"/>
            <parameter key="replace_by" value="&quot;1&quot;\d[0-9]"/>
          </operator>
          <connect from_op="Retrieve DvW_werkdata_DAFnaanalyse3 (2)" from_port="output" to_op="Format Numbers" to_port="example set input"/>
          <connect from_op="Format Numbers" from_port="example set output" to_op="Creating churncode carriere" to_port="in 1"/>
          <connect from_op="Creating churncode carriere" from_port="out 1" to_op="Generate Copy" to_port="example set input"/>
          <connect from_op="Generate Copy" from_port="example set output" to_op="Reorder Attributes" to_port="example set input"/>
          <connect from_op="Reorder Attributes" from_port="example set output" to_op="Replace" to_port="example set input"/>
          <portSpacing port="source_input 1" spacing="0"/>
          <portSpacing port="sink_result 1" spacing="0"/>
        </process>
      </operator>
    </process>
    [ /code]
  • MariusHelfMariusHelf RapidMiner Certified Expert, Member Posts: 1,869 Unicorn
    Just replace "^0+" with "" (empty string), both without quotes. The caret symbol requests that the match must be at the beginning of the string.

    Best regards,
    Marius
Sign In or Register to comment.