Introducing nodes and workflows
In this section, we go through the different parts of a node, explain operations on nodes, and show how to connect nodes to workflows. We also introduce metanodes and components. Finally, we will see how to find and share these resources on the KNIME Hub.
Introducing nodes
A node is responsible for one task and it is the smallest processing unit in KNIME: the Row Filter node, which filters rows, the CSV Reader node, which reads a comma-separated values (CSV) file, and the Bar Chart node, which builds a bar chart are a few examples. Although nodes can perform very different tasks, they all look similar and have similar operations.
Different parts of a node
A node is a visual block with a name, I/O ports, annotation, and a traffic light. The following diagram shows these parts of a node for the CSV Reader node as an example:
Figure 2.4 – The different parts of a node
The node parts are explained in detail as...
