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Marc Stadelmann

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Publications by Marc Stadelmann (bibliography)

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1993
 
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Stadelmann, Marc (1993): A Spreadsheet Based on Constraints. In: Hudson, Scott E., Pausch, Randy, Zanden, Brad Vander and Foley, James D. (eds.) Proceedings of the 6th annual ACM symposium on User interface software and technology 1993, Atlanta, Georgia, United States. pp. 217-224.

Constraints allow the user to declare relationships among objects and let the system maintain and satisfy these relationships. This paper is concerned with the design of a spreadsheet based on constraints. Instead of formulas, we let the user enter numerical constraints, such as >, < and = over the real values in the cells of the spreadsheet. Recalculating the spreadsheet then means (1) checking whether the given cell-values satisfy all constraints and (2) finding values for cells that satisfy the constraints. After a brief presentation of the advantages of a constraint-based spreadsheet, we describe the design of its user-interface. The concept of constraints over cells is extended to constraints over vectors and matrices of cells. We introduce a language for constraints over vectors and matrices of a two-dimensional spreadsheet and define several operations on these vectors. The described new spreadsheet has been implemented and we provide a brief overview of this effort before discussing future work and giving some concluding remarks.

© All rights reserved Stadelmann and/or ACM Press

 
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Jul 14

If you do good work for good clients, it will lead to other good work for other good clients. If you do bad work for bad clients, it will lead to other bad work for other bad clients

-- Michael Bierut

 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

Kumar and Herger 2013: Gamification at Work: Designing Engaging Business Software...
by Janaki Mythily Kumar and Mario Herger

 
Start reading

Whitworth and Ahmad 2013: The Social Design of Technical Systems: Building technologies for communities...
by Brian Whitworth and Adnan Ahmad

 
Start reading

Soegaard and Dam 2013: The Encyclopedia of Human-Computer Interaction, 2nd Ed....
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

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