raster_str: Draw/preview a raster into a string

In gdtools: Utilities for Graphical Rendering and Fonts Management

Draw/preview a raster into a string

Description

raster_view is a helper function for testing. It uses htmltools to render a png as an image with base64 encoded data image.

Usage

raster_str(x, width = 480, height = 480, interpolate = FALSE)

raster_view(code)

Arguments

x	A raster object
width, height	Width and height in pixels.
interpolate	A logical value indicating whether to linearly interpolate the image.
code	base64 code of a raster

Examples

r <- as.raster(matrix(hcl(0, 80, seq(50, 80, 10)),
 nrow = 4, ncol = 5))
code <- raster_str(r, width = 50, height = 50)
if (interactive() && require("htmltools")) {
  raster_view(code = code)
}

gdtools documentation built on Oct. 15, 2023, 5:07 p.m.