idt.read.dataset: Read one of the Thompson lab's retinal datasets

In retistruct: Retinal Reconstruction Program

Read one of the Thompson lab's retinal datasets

Description

Read one of the Thompson lab's retinal datasets. Each dataset is a folder containing a SYS file in SYSTAT format and a MAP file in text format. The SYS file specifies the locations of the data points and the MAP file specifies the outline.

Usage

idt.read.dataset(dataset, report = message, d.close = 0.25)

Arguments

dataset	Path to directory containing as SYS and MAP file
report	Function to report progress
d.close	Maximum distance between points for them to count as the same point. This is expressed as a fraction of the width of the outline.

Details

The function returns the outline of the retina. In order to do so, it has to join up the segments of the MAP file. The tracings are not always precise; sometimes there are gaps between points that are actually the same point. The parameter d.close specifies how close points must be to count as the same point.

Value

dataset	The path to the directory given as an argument
raw	List containing map The raw MAP data sys The raw SYS data
P	The points of the outline
gf	Forward pointers along the outline
gb	Backward pointers along the outline
Ds	List of datapoints
Ss	List of landmark lines

Author(s)

David Sterratt

retistruct documentation built on April 3, 2025, 5:58 p.m.