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Issue with Data set meta data information list in Read CSV operator
jeganathanvelu
Member Posts: 17 
Contributor II
Hi
I am using Rapidminer version 6 for data analysis. I am trying to read a csv file with 6000 rows. when i configure the meta data information in the read csv operator, the data is extracted to show only the last entry (column) in the meta data information list. the process xml code is as below. I am having the same issue with read excel operator.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.1.000">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="6.1.000" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="read_csv" compatibility="6.1.000" expanded="true" height="60" name="Read CSV" width="90" x="45" y="30">
<parameter key="csv_file" value="C:\Users\jeganathan.velu\Desktop\Book1.csv"/>
<parameter key="column_separators" value=","/>
<list key="annotations"/>
<list key="data_set_meta_data_information">
<parameter key="1" value="interest_rate_bps.true.integer.regular"/>
<parameter key="1" value="Deposit.true.integer.regular"/>
<parameter key="2" value="Location.true.nominal.regular"/>
</list>
</operator>
<connect from_op="Read CSV" from_port="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>
but the tool outputs only the last column Location instead of all three columns configured in meta information list
If i configure meta data for 10 columns then only the tenth column data is read from the csv
requesting your help to find out if i am doing something wrong or is this a bug?
Thanks in Advance, Jeganathan Velu.
I am using Rapidminer version 6 for data analysis. I am trying to read a csv file with 6000 rows. when i configure the meta data information in the read csv operator, the data is extracted to show only the last entry (column) in the meta data information list. the process xml code is as below. I am having the same issue with read excel operator.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.1.000">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="6.1.000" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="read_csv" compatibility="6.1.000" expanded="true" height="60" name="Read CSV" width="90" x="45" y="30">
<parameter key="csv_file" value="C:\Users\jeganathan.velu\Desktop\Book1.csv"/>
<parameter key="column_separators" value=","/>
<list key="annotations"/>
<list key="data_set_meta_data_information">
<parameter key="1" value="interest_rate_bps.true.integer.regular"/>
<parameter key="1" value="Deposit.true.integer.regular"/>
<parameter key="2" value="Location.true.nominal.regular"/>
</list>
</operator>
<connect from_op="Read CSV" from_port="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>
but the tool outputs only the last column Location instead of all three columns configured in meta information list
If i configure meta data for 10 columns then only the tenth column data is read from the csv
requesting your help to find out if i am doing something wrong or is this a bug?
Thanks in Advance, Jeganathan Velu.
Tagged:
0
Answers
in order to successfully import csv formatted data you need to specify a valid delimiter for column separation. You might also need to remove quotes from the input. You can easily inspect the required settings by running the csv import wizard (File -> Import Data -> Import CSV file).
Cheers,
Helge