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04 Data Transformation

Exercise for transforming data.

Perform data transformations with the Rule Engine, Math Formula, and String Manipulation nodes, or alternatively, with the Column Expressions node.

URL: Data Manipulation: Numbers, Strings, and Rules https://youtu.be/mJrBXmLQ4ko
URL: Column Expressions Node https://youtu.be/_3EJ5cYdhwI

Exercise: Data Transformation 1) Read the adult.csv file by executing the CSV Reader node 2) Create a new column "work-status" with the value "full-time" if the weekly working hours are >=40 and "part-time" otherwise 3) Replace the hyphen in "United-States" by a space character in the "native-country" column 4) Create a new column "year-of-birth" by substracting the age number from 1994, which is the year when the data were collected 5) OPTIONAL: Replicate the tasks 3 & 4 with the Column Expressions node 6) Take a look at the first row in the data table (ID 177) after completing the data transformation operations. What is the work status, native country, and year of birth of this person?
Read adult.csv
CSV Reader

Nodes

Extensions

Links

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To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: Maarit Laukkanen
Created at: 2020-04-20
On NodePit since: 2026-06-01
Last update: 2026-06-01
Created with KNIME version: v5.11.0
Tags: rule enginestring manipulationmath formulacolumn expressions

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