Walter H. Niehoff

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• The number of permutations of HAV is ! 2 S 6 (factorial), or about 10 -506 • T he number of atoms in the known universe is only about 10-77 • The volume of the known universe is about 1 0 8 4 cu. cm. • The size of the subset of all permutations with even I00 known elements is still 1 0 27 S • T he number of possible HRE's is about 2 3 1 or 1 0 9 • T he(More)
A class of graphical presentations—including common ones like bar charts, column charts, and symbol charts—is characterized by a model of its production as a set of affinely transformed instances of a unit symbol. This paper discusses an APL technique for producing that class of presentations by functionally controlling the instance-producing(More)
This session was presided over by Mr. Walter Niehoff who is the Manager of Engineering Education at IBM, Endicott. He has been using APL for about two years and his prime interest now is the application of APL for: (1)Communication problems - those specifically referring to Computer Science instruction (2)Machine description Mr. Niehoff introduced the(More)
This paper suggests two general directions that one could take to modernize APL2 Graphpak and revitalize its evolution. One direction springboards off lessons learned during Graphpak's first decade and from some thinking that evolved during early (c. 1980) experiments with general arrays. The second direction exploits general arrays and APL2 functionality(More)
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