rodieckach: Rodieck ACh retinal cells

In sje30/sjedrp: Density Recovery Profile for Retinal Mosaics

Rodieck ACh retinal cells

Description

This is the file "Cells.stf" that Bob Rodieck distributes with MacDRP, for computing the density recovery profile. The method should produce a packing factor of 0.26, effective radius of 32.4 um. This DRP should be the same as that given in the manual and in figure 7b of the 1991 paper.

Usage

data(rodieckach)

Format

Rodieck's old STF format for files; only columns used here are those titled x and y.

Author(s)

Stephen Eglen

Source

Rodieck(1991).

References

Rodieck RW (1991). The density recovery profile: A method for the analysis of points in the plane applicable to retinal studies. Visual Neuroscience 6: 95-111.

See Also

autodrp

Examples

## Try the Rodieck data set.
data(rodieckach)
xs.all <- rodieckach$x; ys.all <- rodieckach$y
subset <- which( (ys.all >=3000) & (ys.all <= 4000)); length(subset)
xs <- xs.all[subset]; ys <- ys.all[subset]
plot(xs, ys, asp=1, main="Rodieck example ACh data")
temp <- cbind(xs, ys); print(temp[26:30,]);
res <- autodrp(xs, ys, 20, 10, c(-373, 624, 3000, 4000)); plot(res)
stopifnot(abs(0.27 - res$p)< 0.01)
stopifnot(abs(32.7 - res$effrad)< 0.1)

sje30/sjedrp documentation built on May 1, 2024, 5:20 p.m.