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well, first, u have to read off the axis on the horizontal line,then u read off the vertical axis.
coordinates are written (x,y).
It depends on what the coordinates of the first three vertices are!
1D has vertical bars that are read horizontally, 2D has small squares that are read simultaneously both horizontally and vertically. 2D barcodes can store much more information than 1D barcodes can.
You must read the x axis and then the y axis always