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# CIDataMatrixCodeDescriptor

A concrete subclass the Core Image Barcode Descriptor that represents an Data Matrix code symbol.

```
class CIDataMatrixCodeDescriptor
```

## Overview

A Data Matrix code symbol is a 2D barcode format defined by the ISO/IEC 16022:2006(E) standard.
It encodes data in square or rectangular symbol with solid lines on the left and bottom sides

## Topics

### Creating a Descriptor

[`init(payload:rowCount:columnCount:eccVersion:)`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/init(payload:rowCount:columnCount:eccVersion:))

Initializes a Data Matrix code descriptor for the given payload and parameters.

[`descriptorWithPayload:rowCount:columnCount:eccVersion:`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/descriptorWithPayload:rowCount:columnCount:eccVersion:)

Creates a Data Matrix code descriptor for the given payload and parameters.

### Examining a Descriptor

[`errorCorrectedPayload`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/errorCorrectedPayload-swift.property)

The error-corrected payload containing the data encoded in the Data Matrix code symbol.

[`rowCount`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/rowCount-swift.property)

The number of rows in the Data Matrix code symbol.

[`columnCount`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/columnCount-swift.property)

The number of columns in the Data Matrix code symbol.

[`eccVersion`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/eccVersion-swift.property)

The error correction version of the Data Matrix code symbol.

### Error Correction Constants

[`CIDataMatrixCodeDescriptor.ECCVersion`](/documentation/CoreImage/CIDataMatrixCodeDescriptor/ECCVersion-swift.enum)

Constants indicating the Data Matrix code ECC version.


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