rodieckach: Rodieck ACh retinal cells
| rodieckach | R Documentation |
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)
