gdtools (version 0.4.0)

raster_str: 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)
}