Randposities

Randposities is a Dutch term used in fields such as statistics, computer graphics, and geographic information systems to refer to selected positions within a defined domain. Depending on context, randposities may denote randomly chosen coordinates for sampling or positions located on the boundary (edge) of a region.

In statistics, randposities are used to obtain unbiased samples from a population, often through simple random or stratified sampling within a study area. In computer graphics and image processing, randposities can be used to place samples along the edge of a shape, or to generate points for mesh refinement or contour extraction.

Common methods include generating random numbers to produce coordinates that fall inside the domain, or parameterizing the boundary (for example, using polar coordinates for circular regions) to create boundary randposities. Some approaches constrain the selection so that the randposities cover the area uniformly or concentrate along edges to capture boundary features.

Example: in a 100-by-100 grid, selecting 50 randposities uniformly at random yields 50 coordinates (x,y) with x and y in 0..99. If focusing on edges, coordinates might be chosen from the boundary cells where x is 0 or 99, or y is 0 or 99.

See also: random sampling, boundary sampling, Monte Carlo simulation, spatial sampling, point pattern.