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copied!<p>You seem to be ignoring the documentation. Both of your major questions are answered there. The <a href="http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CocoaDrawingGuide/Images/Images.html#//apple_ref/doc/uid/TP40003290-CH208-BCIBBFGJ" rel="nofollow">Cocoa Drawing Guide</a> (companion guide linked from the NSImage API reference) has an Images section you really need to read thoroughly and refer to any time you have rep/caching/sizing/quality issues.</p> <blockquote> <p>...if I ask for the TIFFRepresentation I get a small icon when the real NSImage I originally created seemed to be vector and would scale up to fill my image views nicely.</p> </blockquote> <p>Relevant subsections of the Images section for this question are: How an Image Representation is Chosen, Images and Caching, and Image Size and Resolution. By default, the -cacheMode for a TIFF image "Behaves as if the NSImageCacheBySize setting were in effect." Also, for in-memory scaling/sizing operations, -imageInterpolation is important: "Table 6-4 lists the available interpolation settings." and "NSImageInterpolationHigh - Slower, higher-quality interpolation."</p> <p>I'm fairly certain this applies to a named system image as well as any other. </p> <blockquote> <p>I was kinda hoping images made [ by loading an image from disk ] would have a NSPDFImageRep I could use.</p> </blockquote> <p>Relevant subsection: Image Representations. "...with file-based images, most of the images you create need only a single image representation." and "You might create multiple representations in the following situations, however: For printing, you might want to create a PDF representation or high-resolution bitmap of your image."</p> <p>You get the representation that suits the loaded image. You must create a PDF representation for a TIFF image, for example. To do so at high resolution, you'll need to refer back to the caching mode so you can get higher-res items.</p> <p>There are a <em>lot</em> of fine details too numerous to list because of the high number of permutations of images/creation mechanisms/settings/ and what you want to do with it all. My post is meant to be a general guide toward finding the specific information you need for your situation. </p> <p>For more detail, add specific details: the code you attempted to use, the type of image you're loading or creating -- you seemed to mention two different possibilities in your fourth paragraph -- and what went wrong.</p>

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