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In this section, we will discuss the screen-to-raster projection, whose job it is to figure out how to get that screen rectangle onto the raster.


The first, and most obvious thing you might want to change is the image resolution. The default for resolution is determined by the output device. Each output device has a default resolution, and the default output device, a TIFF image, has a default resolution of 512 by 384. By using the RiDisplay call, you can change the output device, and this will determine the new default resolution. If you want strict control of the resolution, the RiFormat call can be used to set an explicit output resolution.