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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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28 Apr 2003: Added

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Upcoming Courses

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User-Centred Design - Module 3
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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

 
 
The Social Design of Technical Systems: Building technologies for communities. 2nd Edition
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
Gamification at Work: Designing Engaging Business Software
by Janaki Mythily Kumar and Mario Herger
start reading
 
 
 
 
The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam
start reading