SpatialVx (version 0.3)

disjointer: Identify Disjoint Sets of Connected Components

Description

Identify disjoint sets of contiguous events in a binary field. In many areas of research, this function finds connected components.

Usage

disjointer(x, method = "C")

Arguments

x

A numeric matrix or other object that as.im from package spatstat works on.

method

Same argument as that in connected from package spatstat.

Value

• An unnamed list object where each component is an image describing one set of connected components (or blobs).

Details

disjointer essentially follows the help file for connected to produce a list object where each component is an image describing one set of connected components (or blobs). It is essentially a wrapper function to connected. This function is mainly used internally by FeatureFinder and similar, but could be of use outside such functions.

References

Park, J.-M., Looney, C.G. and Chen, H.-C. (2000) Fast connected component labeling algorithm using a divide and conquer technique. Pages 373-376 in S.Y. Shin (ed) Computers and Their Applications: Proceedings of the ISCA 15th International Conference on Computers and Their Applications, March 29--31, 2000, New Orleans, Louisiana USA. ISCA 2000, ISBN 1-880843-32-3.

Rosenfeld, A. and Pfalz, J.L. (1966) Sequential operations in digital processing. Journal of the Association for Computing Machinery 13 471--494.

See Also

connected, FeatureFinder

Examples

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