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We consider the following map labelling problem: given distinct points p, p, . . . , pn in the plane, and given Ïƒ, find a maximum cardinality set of pairwise disjoint axis-parallel ÏƒÃ— Ïƒ squares Q1,â€¦ (More)

- Marc J. van Kreveld, Tycho Strijk, Alexander Wolff
- Comput. Geom.
- 1999

This paper discusses algorithms for labeling sets of points in the plane, where labels are not restricted to some finite number of positions. We show that continuously sliding labels allow moreâ€¦ (More)

- Frank Wagner, Alexander Wolff, Vikas Kapoor, Tycho Strijk
- Algorithmica
- 2001

The general label-placement problem consists in labeling a set of features (points, lines, regions) given a set of candidates (rectangles, circles, ellipses, irregularly shaped labels) for eachâ€¦ (More)

- Tycho Strijk, Alexander Wolff
- Int. J. Comput. Geometry Appl.
- 2001

We present a new algorithm for labeling points with circles of equal size. Our algorithm tries to maximize the label size. It improves the approximation factor of the only known algorithm for thisâ€¦ (More)

- Sheung-Hung Poon, Chan-Su Shin, Tycho Strijk, Takeaki Uno, Alexander Wolff
- Algorithmica
- 2003

Annotating maps, graphs, and diagrams with pieces of text is an important step in information visualization that is usually referred to as label placement. We define nine label-placement models forâ€¦ (More)

- Steven van Dijk, Marc J. van Kreveld, Tycho Strijk, Alexander Wolff
- International Journal of Geographical Informationâ€¦
- 2002

The cartographic labeling problem is the problem of placing text on a map. It is composed of two phases. In the first, the question which map features should in principle receive a label is settledâ€¦ (More)

- Marc J. van Kreveld, Tycho Strijk, Alexander Wolff
- Symposium on Computational Geometry
- 1998

This paper discusses algorithms for labeling sets of points in the plane, where labels are not restricted to some finite number of positions. We show that continuously sliding labels allows moreâ€¦ (More)

- Tycho Strijk, Marc J. van Kreveld
- ACM-GIS
- 1999

This paper extends on research by the authors together with Alexander Wol on point label placement using a model where labels can be placed at any position that touches the poin t (the slider model).â€¦ (More)

The interest in algorithms that automatically place labels on maps, graphs, or diagrams has increased with the advance in type-setting technology and the amount of information to be visualized.â€¦ (More)

- Tycho Strijk, Marc J. van Kreveld
- GeoInformatica
- 2002

This paper extends on research by the authors together with Alexander Wolff on point label placement using a model where labels can be placed at any position that touches the point (the sliderâ€¦ (More)