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visualFields (version 0.2-4)

Statistical methods for visual fields

Description

A collection of tools for analyzing the field of vision. It provides a framework for development and use of innovative methods for visualization, statistical analysis, and clinical interpretation of visual-field loss and its change over time. It is intended to be a tool for collaborative research.

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Version

Install

install.packages('visualFields')

Monthly Downloads

389

Version

0.2-4

License

GPL (>= 2.0)

Maintainer

Ivan MarinFranch

Last Published

September 18th, 2012

Functions in visualFields (0.2-4)

histogram for PoPLR analysis

progression by linear ordinary least squares

filterReliability

identify visual fields that did not pass filter for reliability

get normative values and location map

load visual fields from a CSV file

standard deviations of normative values

linear model for age effect on visual sensitivity

xy-position mapping between FDP device convention and visualFields convention for patterns of location

loads visual fields from a set of XML files

Permutation of Pointwise Linear Regression (PoPLR): calculation of the p-value

calculate line segments to plot in vfplot representing the overall orientation of the retinal nerve fibre layer bundles according to Jansonious map [1]

Color code for TD or PD probability maps

probability values for visual field index

general height estimated as the rankRef-th ranked TD location

visual field plot

dxtraction of (x,y)-coordinates of tested locations

version of normative values used at present in visualFields

lidLensArtifact

visual fields with lid or lens artifacts

loads visual fields from a XML file

pattern deviation

percentiles for global indices

two-dimensional quadratic fitting for visual-field results

extracts visual-field sensitivity values

ring legend for p-values

permutation of Pointwise Linear Regression (PoPLR)

total-deviation rank curve

SUNY-IU normative reference values for Standard Automatic Perimetry

layout displaying the PoPLR analysis

vflayout_legoplot

legoplot visualization for change in sensitivities over time of visual fields

percentiles for adjusted TD rank curve

visual field index

xy-position mapping between SAP device convention and visualFields convention for patterns of location

probability values for visual field global indices

Settings of visualField object

sort vf-objects

Settings of visual field index

Wrapup for createviewport in package grid

total deviation

percentiles for TD rank curve

select visits per subject from a vf-object

a vf-object with sample data

visualField objects

visualFields-package

Statistical methods for visual fields

visual field stats

percentiles for visual field index

printout with results for the visual field

permutation of pointwise linear regression (PoPLR): calculation of the combined statistic

extracts total-deviation values, pattern-deviation values, total-deviation probability values, and pattern-deviation probability values

demographics and statistics of sample in visual-fields object vf

percentiles for each location

set normative values and location map

extracts from a loaded XML file the info of a tag

a vf-object with sample data

visual field data plot

plot with the PoPLR analysis

probability map for pattern deviation

stimulus location and size

normative values for TD rank curve

gray scales for sensitivities

color legend for p-values in td and pd probability plots

extracts a block from the XML file

probability map for total deviation