retistruct.read.markup: Read the markup data

In retistruct: Retinal Reconstruction Program

Description

Read the markup data contained in the files ‘markup.csv’, ‘P.csv’ and ‘T.csv’ in the directory ‘dataset’, which is specified in the reconstruction object r.

Usage

retistruct.read.markup(a, error = stop)

Arguments

a	Dataset object, containing dataset path
error	Function to run on error, by default stop()

Details

The tear information is contained in the files ‘P.csv’ and ‘T.csv’. The first file contains the locations of outline points that the tears were marked up on. The second file contains the indices of the apex and backward and forward vertices of each tear. It is necessary to have the file of points just in case the algorithm that determines P in retistruct.read.dataset has changed since the markup of the tears.

The remaining information is contained in the file ‘markup.csv’.

If DVflip is specified, the locations of points P flipped in the y-direction. This operation also requires the swapping of gf and gb and VF and VB.

Value

o RetinalDataset object

V0	Indices in P of apices of tears
VB	Indices in P of backward vertices of tears
VF	Indices in P of backward vertices of tears
iN	Index in P of nasal point, or NA if not marked
iD	Index in P of dorsal point, or NA if not marked
iOD	Index in Ss of optic disc
phi0	Angle of rim in degrees
DVflip	Boolean variable indicating if dorsoventral (DV) axis has been flipped

Author(s)

David Sterratt

retistruct documentation built on April 4, 2020, 5:08 p.m.