Based on PostScript model, Illustrator’s artboard position was defined in the first quadrant. This means that the rulers originated from the bottom left of the artboard. In Illustrator CS4, we introduced multiple artboards, but ruler-origin remained the same – at bottom left of the first artboard.
In Illustrator CS5, there has been a significant functional update in ruler. Illustrator CS5 now has a new kind of rulers, called the Artboard Rulers. The origin of these new rulers are at the top-left of ‘each‘ artboard. Which means that each artboard can have its own custom ruler-origin.
If usage of rulers is common in your design process in Illustrator, here are a few things of interest in AiCS5:
- With this update positive vertical increment happen in the Y-axis when going from top to bottom, similar to other applications like InDesign and Photoshop.
- When changing the ruler origin, pattern fills used to get re-tiled and their appearance changed. With Artboard Rulers, ruler-origin changes do not affect pattern fills.
- For those using scripts, the existing scripts from older versions would continue to work the same way. They need not be modified to updated coordinates.
Here a great video on Adobe TV by Mordy Golding that explains this.
Contributed by Neeraj Nandkeolyar, Illustrator Workflow Team