degTopix

Convert degrees to pixels for machine 'machine'

Implementation of the Open Perimetry Interface (OPI) for simulating and controlling visual field machines using R. The OPI is a standard for interfacing with visual field testing machines (perimeters) first started as an open source project with support of Haag-Streit in 2010. It specifies basic functions that allow many visual field tests to be constructed. As of February 2022 it is fully implemented on the Haag-Streit Octopus 900 and 'CrewT ImoVifa' ('Topcon Tempo') with partial implementations on the Centervue Compass, Kowa AP 7000 and Android phones. It also has a cousin: the R package 'visualFields', which has tools for analysing and manipulating visual field data.

Andrew Turpin

Open Perimetry Interface

David Lawson

Ivan Marin-Franch

Matthias Muller

Jonathan Denniss

Astrid Zeman

Giovanni Montesano

degTopix function

<dl><dt>xy</dt>
<dd>a 2 element vector c(x,y) where x and y are in pixels</dd>
<dt>machine</dt>
<dd>"compass" or ...?</dd></dl>

Arguments

Convert degrees to pixels for machine 'machine' — degTopix

<dl>

<dt>xy</dt>
<dd>a 2 element vector c(x,y) where x and y are in pixels</dd>


<dt>machine</dt>
<dd>"compass" or ...?</dd>

</dl>

degTopix: Convert degrees to pixels for machine 'machine'

Description

Usage

Value

Arguments

Examples