Reference Guide
GdPicture14 Namespace / GdPictureImaging Class / BarcodeDataMatrixReaderGetBarcodeY4 Method
Barcode index. Must be between 1 and BarcodeDataMatrixReaderGetBarcodeCount returned value.
Example





In This Topic
    BarcodeDataMatrixReaderGetBarcodeY4 Method (GdPictureImaging)
    In This Topic
    Returns the Y position (in pixels) of the bottom-left corner of a barcode detected by the BarcodeDataMatrixReaderDoScan method. If ROI has been set, this coordinate is relative to the used ROI.
    Syntax
    'Declaration
     
    
    Public Function BarcodeDataMatrixReaderGetBarcodeY4( _
       ByVal BarcodeNo As Integer _
    ) As Integer
    public int BarcodeDataMatrixReaderGetBarcodeY4( 
       int BarcodeNo
    )
    public function BarcodeDataMatrixReaderGetBarcodeY4( 
        BarcodeNo: Integer
    ): Integer; 
    public function BarcodeDataMatrixReaderGetBarcodeY4( 
       BarcodeNo : int
    ) : int;
    public: int BarcodeDataMatrixReaderGetBarcodeY4( 
       int BarcodeNo
    ) 
    public:
    int BarcodeDataMatrixReaderGetBarcodeY4( 
       int BarcodeNo
    ) 

    Parameters

    BarcodeNo
    Barcode index. Must be between 1 and BarcodeDataMatrixReaderGetBarcodeCount returned value.

    Return Value

    The barcode Y position of the bottom-left corner; relative to the ROI, if any is defined.
    Remarks

    This method is used in the "Barcode Recognition" Demo.

    Example
    Finding DataMatrix barcodes in an image and writes complete barcodes info into a file.
    using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
    {
        int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
     
        // Set to 0, so all the DataMatrix barcodes in the image should be found.
        int expectedBarcodes = 0;
     
        // Perform scanning at best speed, ignoring very damaged barcodes.
        BarcodeDataMatrixReaderScanMode mode = BarcodeDataMatrixReaderScanMode.BestSpeed;
     
        // Start the DataMatrix scanning process and write info into a text file.
        gdpictureImaging.BarcodeDataMatrixReaderDoScan(imageID, mode, expectedBarcodes);
     
        using (System.IO.StreamWriter file = new System.IO.StreamWriter("DataMatrix.txt"))
        {
            int barcodesFound = gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeCount();
     
            for (int i = 1; i <= barcodesFound; i++)
            {
                // Decoded information.
                file.WriteLine("Decoded info = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeValue(i));
     
                // The skew angle of the barcode, in degrees.
                file.WriteLine("Skew angle = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeSkewAngle(i));
     
                // The number of rows of the barcode.
                file.WriteLine("Rows = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeRows(i));
     
                // The number of columns of the barcode.
                file.WriteLine("Columns = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeColumns(i));
     
                // The raw bytes decoded. It was post-processed to find the correct decoded info based on detected Encoding.
                file.WriteLine("Raw bytes = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeValueRAW(i));
     
                // The barcode position, given by the coordinates of the corners.
                file.WriteLine("Position =  Top-Left=["
                    + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY1(i)
                    + "] Top-Right=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY2(i)
                    + "] Bottom-Right=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY3(i)
                    + "] Bottom-Left=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY4(i) + "]");
            }
        }
     
        // Release used resources.
        gdpictureImaging.BarcodeDataMatrixReaderClear();
        gdpictureImaging.ReleaseGdPictureImage(imageID);
    }
    See Also