write the loop label models outputs to different excel files

mansourmansour Member Posts: 26 Contributor II
Dear All
I wonder how I can write the output Excel for the Loop Lable model on new Excel each time, when I use this model, whenever it tries to write an Excel, it overwrites the previous loop results. I want it to be written in a new Excel each time.
Best wishes.

Best Answer

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    MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,507 RM Data Scientist
    Solution Accepted
    while your solution works perfectly, you can even make it slightly easier.

    There are a few "hidden macros", which are always available. The most useful one is maybe %{a}, which always gives you the execution count of the current operator.
    You can just use
    as a path in Write excel.

    This is the list of other macros which are always available:

    • %{n} or %{operator_name} with the name of this operator
    • %{c} with the class of this operator
    • %{t} with the current system date and time
    • %{a} or %{execution_count} with the number of times the operator was applied
    • %{b} with the number of times the operator was applied plus one (a shortcut for %{p[1]})
    • %{p[number]} with the number of times the operator was applied plus number
    • %{v[OperatorName.ValueName]} with the value "ValueName" of the operator "OperatorName"
    • %{process_name}: will be replaced by the name of the process (without path and extension)
    • %{process_file}: will be replaced by the file name of the process (with extension)
    • %{process_path}: will be replaced by the complete absolute path of the process file
    • %{execution_count}: will be replaced by the number of times the current operator was applied.
    • %{operator_name}: will be replaced by the name of the current operator.
    • %{tempdir} gives you the directory of the tempdir on this machine


    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany


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    rjones13rjones13 Member Posts: 163 Unicorn
    Hi Mansour,

    Just checking if you have a desired naming convention for the Excel files you're producing?

    What I would do here is use macros inside the loop and modify the write Excel to have that macro as a suffix. Here's a small example that you can point to your ExampleSet.


    <?xml version="1.0" encoding="UTF-8"?><process version="10.2.000">
    <operator activated="true" class="process" compatibility="10.2.000" 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="UTF-8"/>
    <process expanded="true">
    <operator activated="true" class="retrieve" compatibility="10.2.000" expanded="true" height="68" name="Retrieve dataset" width="90" x="45" y="34">
    <parameter key="repository_entry" value="//Local Repository/Demos/Full-Iris"/>
    <operator activated="true" class="set_macro" compatibility="10.2.000" expanded="true" height="82" name="Set Macro" width="90" x="179" y="34">
    <parameter key="macro" value="counter"/>
    <parameter key="value" value="1"/>
    <operator activated="true" class="loop_labels" compatibility="10.2.000" expanded="true" height="82" name="Loop Labels" width="90" x="313" y="34">
    <process expanded="true">
    <operator activated="true" class="write_excel" compatibility="10.2.000" expanded="true" height="103" name="Write Excel" width="90" x="112" y="34">
    <parameter key="excel_file" value="C:/Users/rjones/Downloads/test-%{counter}.xlsx"/>
    <parameter key="file_format" value="xlsx"/>
    <enumeration key="sheet_names"/>
    <parameter key="sheet_name" value="RapidMiner Data"/>
    <parameter key="date_format" value="yyyy-MM-dd HH:mm:ss"/>
    <parameter key="number_format" value="#.0"/>
    <parameter key="encoding" value="UTF-8"/>
    <operator activated="true" class="generate_macro" compatibility="10.2.000" expanded="true" height="82" name="Generate Macro" width="90" x="313" y="85">
    <list key="function_descriptions">
    <parameter key="counter" value="eval(%{counter})+1"/>
    <connect from_port="example set" to_op="Write Excel" to_port="input"/>
    <connect from_op="Write Excel" from_port="through" to_op="Generate Macro" to_port="through 1"/>
    <connect from_op="Generate Macro" from_port="through 1" to_port="out 1"/>
    <portSpacing port="source_example set" spacing="0"/>
    <portSpacing port="sink_out 1" spacing="0"/>
    <portSpacing port="sink_out 2" spacing="0"/>
    <connect from_op="Retrieve dataset" from_port="output" to_op="Set Macro" to_port="through 1"/>
    <connect from_op="Set Macro" from_port="through 1" to_op="Loop Labels" to_port="example set"/>
    <connect from_op="Loop Labels" from_port="out 1" 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"/>
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