Package 'imageviewer'

Title: Simple 'htmlwidgets' Image Viewer with WebGL Brightness/Contrast
Description: Display a 2D-matrix data as a interactive zoomable gray-scale image viewer, providing tools for manual data inspection. The viewer window shows cursor guiding lines and a corresponding data slices for both axes at the current cursor position. A tool-bar allows adjusting image display brightness/contrast through WebGL filters and performing basic high-pass/low-pass filtering.
Authors: Iakov Pustilnik [aut, cre], Denis Rastegaev [aut]
Maintainer: Iakov Pustilnik <[email protected]>
License: MIT + file LICENSE
Version: 0.1.0
Built: 2026-05-28 10:13:57 UTC
Source: https://github.com/yapus/imageviewer

Help Index

imageviewer

Description

Simple htmlwidgets matrix viewer with WebGL brightness/contrast

Usage

imageviewer(data, width = NULL, height = NULL, elementId = NULL,
  options = list())

Arguments

data

A matrix
width, height

matrix dimensions
elementId

HTML element Id
options

list of other options (passed through to JS code)

Value

Plot matrix in html widget

Examples

# Create matrix
m <- matrix(rnorm(512 * 512, mean = 100, sd = 10), 512, 512)

# Plot
imageviewer(m)

Shiny bindings for imageviewer

Description

Output and render functions for using imageviewer within Shiny applications and interactive Rmd documents.

Usage

imageviewerOutput(outputId, width = "100%", height = "400px")

renderImageviewer(expr, env = parent.frame(), quoted = FALSE)

Arguments

outputId

output variable to read from
width, height

Must be a valid CSS unit (like '100%', '400px', 'auto') or a number, which will be coerced to a string and have 'px' appended.
expr

An expression that generates a imageviewer
env

The environment in which to evaluate expr.
quoted

Is expr a quoted expression (with quote())? This is useful if you want to save an expression in a variable.