plot_pixel: Plot pixel visualization

In daltoolbox: Leveraging Experiment Lines to Data Analytics

Plot pixel visualization

Description

Pixel-oriented visualization of a numeric matrix or data.frame.

Usage

plot_pixel(
  data,
  colors = NULL,
  title = NULL,
  label_x = "sample",
  label_y = "Attributes"
)

Arguments

data	numeric matrix or data.frame
colors	optional vector of colors for the fill gradient
title	optional plot title
label_x	x-axis label
label_y	y-axis label

Details

Renders a heatmap-like plot where each cell is a pixel. Useful for multivariate inspection.

Value

returns a ggplot2::ggplot graphic

Examples

data(iris)
grf <- plot_pixel(as.matrix(iris[,1:4]), title = "Iris")
plot(grf)

daltoolbox documentation built on Feb. 10, 2026, 9:06 a.m.