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.
Table of Contents (11 chapters)

Using the designer


There is a good introduction to BIRT at http://www.eclipse.org/birt/phoenix/tutorial/—although the KNIME version is slightly different, it still offers information on few other options. Some of the views are not visible by default, so we will explain how you can create report designs for your workflow.

You might realize that when you installed the reporting extension, a new button appeared on the toolbar. The icon looks like four yellow/orange stripes and a line plot with four points. Also, it is on the right-hand side of the zooming factor. When you have saved your workflow, click it and apply the changes, so that the data from KNIME will be available as a data set.

Then, you open the KNIME report designer perspective, and you should get a dialog about the new data being available. It is recommended to apply the changes so that you will get the updated data in the designer, the preview, and in the reports.

KNIME report designer perspective

You can immediately see that this...