Book Image

KNIME Essentials

By : Gábor Bakos
Book Image

KNIME Essentials

By: Gábor Bakos

Overview of this book

KNIME is an open source data analytics, reporting, and integration platform, which allows you to analyze a small or large amount of data without having to reach out to programming languages like R. "KNIME Essentials" teaches you all you need to know to start processing your first data sets using KNIME. It covers topics like installation, data processing, and data visualization including the KNIME reporting features. Data processing forms a fundamental part of KNIME, and KNIME Essentials ensures that you are fully comfortable with this aspect of KNIME before showing you how to visualize this data and generate reports. "KNIME Essentials" guides you through the process of the installation of KNIME through to the generation of reports based on data. The main parts between these two phases are the data processing and the visualization. The KNIME variants of data analysis concepts are introduced, and after the configuration and installation description comes the data processing which has many options to convert or extend it. Visualization makes it easier to get an overview for parts of the data, while reporting offers a way to summarize them in a nice way.

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KNIME Essentials
Gábor Bakos
Oct, 2013 | 148 pages
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Table of Contents (11 chapters)
KNIME Essentials
KNIME Essentials
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Installing and Using KNIME
Installing and Using KNIME
Few words about KNIME
Installing KNIME
KNIME terminologies
User interface
Summary
2
Data Preprocessing
Data Preprocessing
Importing data
Regular expressions
Transforming the shape
Transforming values
Data generation
Constraints
Loops
Workflow customization
Case study – finding min-max in the next n rows
Case study – ranks within groups
Summary
3
Data Exploration
Data Exploration
Computing statistics
Overview of visualizations
Visual guide for the views
Distance matrix
Using visual properties
KNIME views
Basic KNIME views
JFreeChart
Open Street Map
3D Scatterplot
Other visualization nodes
Tips for HiLiting
Visualizing models
Summary
4
Reporting
Reporting
Installation of the reporting extensions
Reporting concepts
Importing data
Preferences
Using the designer
Generating reports
Using colors
Using HiLite
Using workflow variables
Suggested readings
Summary
Index
Index

Using colors

There are a few KNIME example workflows on the public server; in this section, we just mention one of them, which describes how to use the color information present in KNIME in the reports.

The 010006_UseKNIMEColorsInReporting workflow is available from the KNIME public server. To use it, just copy it from the public server and paste it to the local workspace.

It requires a basic scripting knowledge, but the workflow gives detailed description on how to use the color information so that it can be used as an introduction to scripting.

If you are fine not defining the colors in the KNIME workflow, it might be easier to define those within the reporting template and bind the colors to certain values.

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