sample_pixels: Sample pixels from a JPEG file

In cwickham/routes: Generate data-based landscapes from driving routes

Description

Takes a simple random sample of sample_size pixels from a JPEG file.

Usage

sample_pixels(file, sample_size = 50)

Arguments

file	path to JPEG file
sample_size	Number of pixels to sample

Value

tibble with sample_size rows, and columns R, G and B

Examples

example_jpg <- system.file("extdata", "example.JPG", package = "routes")
set.seed(4891)
sample_pixels(example_jpg, 10)
sample_pixels(example_jpg, 10) %>% 
  with(colorspace::RGB(R, G, B)) %>% 
  colorspace::hex() %>% 
  pal()

cwickham/routes documentation built on Nov. 4, 2019, 9:34 a.m.