Prefixing the Attribute names

Shubha

Hi,

I want to prefix certain attribute names with a particular string. Below I have a generated an example data....

<operator name="Root" class="Process" expanded="yes">
    <operator name="Generate Suitable Data" class="OperatorChain" expanded="yes">
        <operator name="ExampleSetGenerator" class="ExampleSetGenerator">
            <parameter key="target_function"	value="sum"/>
            <parameter key="number_examples"	value="10"/>
        </operator>
        <operator name="ChangeAttributeName" class="ChangeAttributeName">
            <parameter key="old_name"	value="att1"/>
            <parameter key="new_name"	value="A"/>
        </operator>
        <operator name="ChangeAttributeName (2)" class="ChangeAttributeName">
            <parameter key="old_name"	value="att2"/>
            <parameter key="new_name"	value="B"/>
        </operator>
        <operator name="ChangeAttributeName (3)" class="ChangeAttributeName">
            <parameter key="old_name"	value="att3"/>
            <parameter key="new_name"	value="H"/>
        </operator>
        <operator name="ChangeAttributeName (4)" class="ChangeAttributeName">
            <parameter key="old_name"	value="att4"/>
            <parameter key="new_name"	value="Y"/>
        </operator>
        <operator name="ChangeAttributeName (5)" class="ChangeAttributeName">
            <parameter key="old_name"	value="att5"/>
            <parameter key="new_name"	value="M"/>
        </operator>
    </operator>
</operator>

Now in the above data, I need to Prefix the attributes A, B, H, Y and M with the string, "Var_". So, my new changed attribute names are now, Var_A, Var_B, Var_H, Var_Y and Var_M. Note: The original variables A, B, H.... can be a mix of any data type, not always real.

I tried with changing attribute names and related operators, but did not get it... How do i perform this?

Thanks, Shubha

Shubha

Hi, got that done by adding the below code:

    <operator name="ChangeAttributeNamesReplace" class="ChangeAttributeNamesReplace">
        <parameter key="replace_what"	value="^"/>
        <parameter key="replace_by"	value="Var_"/>
    </operator>