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All Outputs (57)

Deviation of the Sungei Mulia (1970)
Journal Article
Visvalingam, M. (1970). Deviation of the Sungei Mulia. Geographica : journal of the Department of Geography, and Geographical Society, University of Malaya, Kuala Lumpur, 6, 123-129

Changes in land use triggering the instability of canalised river channels in padi fields in the Gombak Valley, Selangor, Malaysia.

Problems of hydrological research in padi areas (1969)
Journal Article
Visvalingam, M. (1969). Problems of hydrological research in padi areas. Geographica : journal of the Department of Geography, and Geographical Society, University of Malaya, Kuala Lumpur, 5, 91-98

Changes in land use triggering the instability of canalised river channels in padi fields in the Gombak Valley, Selangor, Malaysia.

Testing implementations of Visvalingam's algorithm for line generalisation
Book
Visvalingam, M. Testing implementations of Visvalingam's algorithm for line generalisation

There are a growing number of open source and commercial implementations of the Visvalingam algorithm for line generalisation. The algorithm provides scope for implementation-specific interpretations, with different outcomes. This is inevitable and s... Read More about Testing implementations of Visvalingam's algorithm for line generalisation.

Sketch-based evaluation of line filtering algorithms
Presentation / Conference Contribution
Visvalingam, M. (2000, October). Sketch-based evaluation of line filtering algorithms. Paper presented at GIScience 2000, Savannah, Georgia

CISRG research into algorithmic sketching seeks to revive interest in the lost art of landscape drawing as practised by Holmes,
Lobeck, Raisz and others. Dowson (1994) and Visvalingam and Dowson (1998) developed the P-stroke style for sketching.
V... Read More about Sketch-based evaluation of line filtering algorithms.

Bloch's function D for weighted effective areas : impact of tuning parameters
Book
Visvalingam, M. Bloch's function D for weighted effective areas : impact of tuning parameters

Abstract When Visvalingam’s algorithm was first presented, it was noted that it could be driven with any metric to suit different purposes, types of features and degrees of generalisation. It was illustrated with the concept of the effective area (EA... Read More about Bloch's function D for weighted effective areas : impact of tuning parameters.

Geometric data for testing implementations of point reduction algorithms : case study using Mapshaper v 0.2.28 and previous versions
Book
Visvalingam, M. Geometric data for testing implementations of point reduction algorithms : case study using Mapshaper v 0.2.28 and previous versions

There are several open source and commercial implementations of the Visvalingam algorithm for line generalisation. The algorithm provides scope for implementation-specific interpretations, with different outcomes. This is inevitable and sometimes nec... Read More about Geometric data for testing implementations of point reduction algorithms : case study using Mapshaper v 0.2.28 and previous versions.