Details of Data Stream Nodes

Introduction

Functions

Currently there are eight types of nodes including: Input field, Output field, Join field, Union field, Group by field, Data Filter field, Field Settings field, and Pivot field.

Application Scenarios

Current nodes can be categorized into two types:

1. Input/Output Node

Input: the origin of data used for selecting data to process

Output: the exit of data stream (the result of data calculation) output as data stream output form

2. Data Processing Nodes

There are six types of data processing nodes including Join, Union, Group by, Data Filter, Field Settings, and Pivot.
The specific usage of each node will be explained in detail in this chapter.

Basic Settings

Where to Add

When there is a data stream, select data stream nodes from the left to design.

Adding/Deleting

You can add nodes by dragging and dropping; Click or tap Delete on the keyboard to delete the selected node.

When you delete the node, all other nodes connected with it are disconnected.

Adding Join Lines

Only by adding join lines can nodes connect with each other and perform data calculation according to rules.

Renaming Nodes

Rename nodes to better distinguish data processing nodes.

Note: Output cannot be renamed. Its name is from the data source form.

Data Preview

Data Preview is used to view processed data and help determine whether the data is right and meets business requirements.

Undo or Redo

When there is a false click, you can click, or can clickto cancel the undo.

You can also undo and redo the step by keyboard shortcuts:

1. Undo

Mac OS system: ⌘+Z
Windows system: Ctrl+Z

2. Redo

Mac OS system: ⌘+Y
Windows system: Ctrl+Y

Align

Select more than two data stream nodes to align and click Align in the tooler to set nodes.

There are six ways to align nodes:

Align	Aligning Types	Aligning Rules
Align Horizontally	Left	Align the left-most node of all selected nodes to the left
	Center	Align the left-most and right-most node of all selected nodes to the center
	Right	Align the right-most node of all selected nodes to the right
Align Vertically	Top	Align the top-most node of all selected nodes to the upward
	Middle	Align the top-most and bottom-most node of all selected nodes to the middle
	Bottom	Align the bottom-most node of all selected nodes to the downward

Preview:

Layout

Select three or more nodes and adjust them stay equidistant to allow nodes equally distributed horizontally and vertically.

There are two types of Layout:

Horizontal
Vertical

Canvas Scale and Navigator

When there are multiple data stream nodes, you can adjust the canvas scale to check the data stream settings. You can also use Navigator to find the location of data stream nodes.

Notes

1. Data processing nodes are limited to no more than 200.

2. Join, Union, and Group By can add nodes up to 50 respectively.

3. Data streams that exceed the limit of nodes can be used normally, but cannot be copied.