Hughes' Amacrine Cell Data
Austin Hughes' data: a point pattern of displaced amacrine cells in the retina of a rabbit. A marked point pattern.
An object of class
representing the point pattern of cell locations.
x Cartesian $x$-coordinate of cell
y Cartesian $y$-coordinate of cell
marks factor with levels
indicating ``off'' and ``on'' cells
ppp.object for details of the format.
Peter Diggle, personal communication
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 rectangle with dimensions 1.6065 by 1.0 where the unit of measurement is approximately 1 mm.
The data were analysed by Diggle (1986).
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.