TFW World File Values

The tfw world file is a text file used to georeference the GeoTIFF raster images, like the orthomosaic and the DSM.

The tfw file is a 6-line file:

Line 1: pixel size in the x-direction in map units (GSD).
Line 2: rotation about y-axis. 
Line 3: rotation about x-axis.
Line 4: pixel size in the y-direction in map in map units (GSD).
Line 5: x-coordinate of the upper left corner of the image.
Line 6: y-coordinate of the upper left corner of the image.

As pixels are considered as square lines 1 and 4 are the same.

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