Extract Data

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Description

This Step is used to extract the data at a specified index or in a specified range of an array or a list.

Workflow

The process of configuring this Step is shown below.

  1. Configure the input. Connect the ports manually or select the input(s) under Input in the parameter configuration panel.

  2. Configure the index value or index range for data extraction under Parameters.

  3. Run the Step and view output.

Parameter Description

Parameter Description

Dimension

This parameter is used to set the declared dimension of the input port, which should typically match the dimension of the actual input data. The dimension of an array refers to the number of dimensions or axes in the array.

Value range: 0 to 15

Only when the data type is String can Dimension be set to 0.

Use Range

This parameter determines whether to use the index range to define the elements to be extracted. An index value of 1 indicates the first element.

  • Unselected: Extract the element at the specified Index.

  • Selected: Extract elements within the specified index range. For this, you need to set Begin Index and End Index.

Index

The index value of the element to be extracted, which is the position of the element in an array or a list. Index values are incremented from 1.

Output Description

The output of this Step is the extracted data.

The declared dimension of the output port of this Step may change. The specific rules are as follows:

  • When a single element is extracted, the declared dimension of the output port decreases by 1.

  • When a range of elements is extracted, the declared dimension of the output port remains unchanged.

For example, the actual input data is Number [], and the dimension is set to 1. When extracting a single element, the declared dimension of the output port decreases by 1, and the port becomes Number. When extracting a range of elements, the declared dimension of the output port remains unchanged, and the port remains Number [].

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