ripleypy 0.2.1

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Ripley-py

Performs 2D ripley analysis of points inside a masked area. Edge correction is performed in accordance with the description by Peter Haase (1995)

Edge corrections by weighting It(uij) were employed by Getis & Franklin (1987) and Andersen (1992). The weighting factor wij is equal to the proportion of the circumference of the circle with radius uij and centred on point i and passing through j, that lies within the plot boundaries.

This is approximated by 256 points on a circle.

Examples

Each example plots the masked area with the points on top, and below it the observed L(r) - r curve against the random-noise floor (median +/- 75% interval from repeated random draws in the same mask).

Example images 1

Generated with example1.py

Random

Clustered

Example images 2

Generated with example2.py

Real world data

Mask from convex hull of the points