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Import Data

Ellie98

Hello,
I have difficulties to import the Data from my teacher to work with it. Could someone help me out please? Do I have to import a read file first?
I have to import and work with the Iris Data but it's not working

Thanks in advance!

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Data Import

Accepted answers

kayman

Hi @Ellie98, That's probably normal, as we're 'faking' a csv file here.

Just try as below, but change the path to your dat file :
It works for my dat files, but that doesn't mean it works for everything of course. But given that a dat file is in essence just a tab separated file it should give at least something.

<?xml version="1.0" encoding="UTF-8"?><process version="9.8.001">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="9.8.001" 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="read_csv" compatibility="9.8.001" expanded="true" height="68" name="Read CSV" width="90" x="313" y="34">
        <parameter key="csv_file" value="path_to_your_dat"/>
        <parameter key="column_separators" value="\t"/>
        <parameter key="trim_lines" value="false"/>
        <parameter key="use_quotes" value="false"/>
        <parameter key="quotes_character" value="&quot;"/>
        <parameter key="escape_character" value="\"/>
        <parameter key="skip_comments" value="false"/>
        <parameter key="comment_characters" value="#"/>
        <parameter key="starting_row" value="1"/>
        <parameter key="parse_numbers" value="true"/>
        <parameter key="decimal_character" value="."/>
        <parameter key="grouped_digits" value="false"/>
        <parameter key="grouping_character" value=","/>
        <parameter key="infinity_representation" value=""/>
        <parameter key="date_format" value=""/>
        <parameter key="first_row_as_names" value="false"/>
        <list key="annotations"/>
        <parameter key="time_zone" value="ECT"/>
        <parameter key="locale" value="English (United States)"/>
        <parameter key="encoding" value="UTF-8"/>
        <parameter key="read_all_values_as_polynominal" value="true"/>
        <list key="data_set_meta_data_information"/>
        <parameter key="read_not_matching_values_as_missings" value="true"/>
        <parameter key="datamanagement" value="double_array"/>
        <parameter key="data_management" value="auto"/>
      </operator>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
    </process>
  </operator>
</process>

All comments

kayman

Hi @Ellie98, You should be able to use dat files if you import them using the read csv operator, and set the column separator to tab (\t).
Don't use the wizard, just plane stupid import with the above settings. This (should) result in a structured format to work with in Rapidminer.

Ellie98

Hey @kayman ,
if I try to open the file with Read CSV I can't see the file anymore

kayman

<?xml version="1.0" encoding="UTF-8"?><process version="9.8.001">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="9.8.001" 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="read_csv" compatibility="9.8.001" expanded="true" height="68" name="Read CSV" width="90" x="313" y="34">
        <parameter key="csv_file" value="path_to_your_dat"/>
        <parameter key="column_separators" value="\t"/>
        <parameter key="trim_lines" value="false"/>
        <parameter key="use_quotes" value="false"/>
        <parameter key="quotes_character" value="&quot;"/>
        <parameter key="escape_character" value="\"/>
        <parameter key="skip_comments" value="false"/>
        <parameter key="comment_characters" value="#"/>
        <parameter key="starting_row" value="1"/>
        <parameter key="parse_numbers" value="true"/>
        <parameter key="decimal_character" value="."/>
        <parameter key="grouped_digits" value="false"/>
        <parameter key="grouping_character" value=","/>
        <parameter key="infinity_representation" value=""/>
        <parameter key="date_format" value=""/>
        <parameter key="first_row_as_names" value="false"/>
        <list key="annotations"/>
        <parameter key="time_zone" value="ECT"/>
        <parameter key="locale" value="English (United States)"/>
        <parameter key="encoding" value="UTF-8"/>
        <parameter key="read_all_values_as_polynominal" value="true"/>
        <list key="data_set_meta_data_information"/>
        <parameter key="read_not_matching_values_as_missings" value="true"/>
        <parameter key="datamanagement" value="double_array"/>
        <parameter key="data_management" value="auto"/>
      </operator>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
    </process>
  </operator>
</process>

Ellie98

@kayman I'm not sure what to do. Should I copy paste the code somewhere? If yes, where?

kayman

@Ellie98,
open a new project and select menu -> View -> Show Panel -> XML

This provides the raw code behind the scenes. You remove everything you see (shouldn't be much as it's a new project window)
Paste the code above and tick the green mark in the upper left corner of the XML window, this 'saves' the code as project
Move back to your process window, now everything should be visible in friendly format again

Ellie98

@kayman
okay, I got it. It works now, thank you so much!

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