amacrine

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Hughes' Amacrine Cell Data

Austin Hughes' data: a point pattern of displaced amacrine cells in the retina of a rabbit. A marked point pattern.

Keywords
datasets, spatial
Usage
data(amacrine)
format

An object of class "ppp" representing the point pattern of cell locations. Entries include ll{ x Cartesian $x$-coordinate of cell y Cartesian $y$-coordinate of cell marks factor with levels off and on indicating ``off'' and ``on'' cells } See ppp.object for details of the format.

source

Peter Diggle, personal communication

Notes

Austin Hughes' data: a point pattern of displaced amacrine cells in the retina of a rabbit. 152 ``on'' cells and 142 ``off'' cells in a rectangular sampling frame.

The true dimensions of the rectangle are 1060 by 662 microns. The coordinates here are scaled to a rectangle of height 1 and width $1060/662 = 1.601$ so the unit of measurement is approximately 662 microns.

The data were analysed by Diggle (1986).

References

Diggle, P. J. (1986). Displaced amacrine cells in the retina of a rabbit: analysis of a bivariate spatial point pattern. J. Neurosci. Meth. 18, 115--125.

Aliases
  • amacrine
Documentation reproduced from package spatstat, version 1.19-2, License: GPL (>= 2)

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