Generate EAN-2 and EAN-5 as Supplement Barcodes

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Overview

Aspose.BarCode for Python via .NET supports EAN-2 and EAN-5 types but only as a supplement for some barcode types, i.e. EAN-8, EAN-13, Interleaved 2-of-5, Standard 2-of-5, ISMN, ISBN, ISSN, UPC-E, or UPC-A. Supplement barcodes are used to encode two or five additional characters with their own checksum controls. Supplement barcodes have applications that are limited to specific industrial tasks. They can also be used in production to store additional information about products or their price.

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Supplement Barcode Settings

Conventional barcodes serve to encode the most important information about items or products. To store additional (supplement) data besides primary barcodes, developers can use the supplement_data property of class SupplementParameters. This property needs to take 2 or 5 additional numerical digits for EAN-2 or EAN-5, respectively. Thereafter, the library identifies the suitable barcode type automatically based on the entered number of digits. Supplement barcode size is computed automatically according to the parameters of the primary barcode.

The following barcodes have been created enabling EAN-2 and EAN-5 supplements for EAN-13 barcodes.

Supplement Barcode	EAN-2	EAN-5

Adjusting Supplement Spacing

To define the size of a gap between the main and supplement barcodes, the library provides the supplement_space property of class SupplementParameters.

The barcode samples demonstrated below have been generated with different gap settings.

Supplement Spacing	Is Set to 20 Pixels	Is Set to 40 Pixels