NSImageView setImageScaling:NSScaleToFit blurs image

FROM : R.L. Grigg
DATE : Tue Mar 04 20:13:46 2008

I have a series of tiny (32x32) PGM image astronomical IR data in 
memory that I display on screen zoomed up to 640x640. Right now Im 
using a NSImageView and setImageScaling:NSScaleToFit. This works but 
some sort of gaussian blur gets applied to the image ruining the 
analysis.

Is there a setting to turn off this default blur or is there another 
way I can zoom display a small image (QCView?) but without the blur? 
The net effect of what we need is a sharp pixellated image not one 
where the pixellated block edges are smeared.

OSX 10.5.2, Xcode 3.0, ObjC 2.0