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The Book of GIMP by Karine Delvare, Olivier Lecarme

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10.1 Rulers and Units

As soon as an image is opened in the Image window, two rulers appear, as shown in Figure 10-1. The horizontal ruler is just below the menu bar, and the vertical ruler is on the left side. In this figure, the mouse pointer is located at coordinates (1356, 1128), as the information on the left of the status bar shows. The coordinate units, displayed just to the right of these numbers, are pixels. Because the image zoom factor is 25%, as shown in the status bar, a pixel on the screen actually corresponds to a square of 4 × 4 pixels. Small black triangles on each of the rulers show the mouse pointer’s current horizontal and vertical coordinates.

This is the default setup, and it works for most things in GIMP. The information provided ...

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