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GNUexp is a GNUstep/Cocoa framework and a collection of tools helping you to plan, develop, and administer applications associated with visual psychophysics, experimental psychology and statistical data analysis.
This project is a framework (i.e., library) for Mac OS X applications to link in. It provides plots of data together with the supporting machinery (objects inheriting from NSDocument, for example) that
applications can use to manipulate the plots.