raster_helpers: Raster Helpers

In ggfx: Pixel Filters for 'ggplot2' and 'grid'

Raster Helpers

Description

Raster Helpers

Usage

blend_raster(x, bg_layer, blend_type = "Over", flip_order = FALSE, alpha = NA)

blend_custom_raster(x, bg_layer, a, b, c, d, flip_order = FALSE, alpha = NA)

bloom_raster(
  x,
  threshold_lower = 80,
  threshold_upper = 100,
  sigma = 5,
  strength = 1,
  keep_alpha = TRUE
)

blur_raster(x, sigma = 0.5, stack = FALSE)

displace_raster(x, x_map, y_map = x_map, x_scale = 1, y_scale = x_scale)

dither_raster(x, max_colours = 256, colourspace = "sRGB")

inner_glow_raster(x, colour = "black", sigma = 3, expand = 0)

interpolate_raster(x, bg_layer, src_percent, bg_percent)

convolve_grob(
  x,
  kernel,
  iterations = 1,
  scaling = NULL,
  bias = NULL,
  stack = FALSE
)

mask_raster(x, mask, invert = FALSE)

motion_blur_raster(x, sigma = 0.5, angle = 0)

ordered_dither_raster(x, map, colourspace = "sRGB", offset = NULL)

outer_glow_raster(x, colour = "black", sigma = 3, expand = 0)

shade_raster(
  x,
  height_map,
  azimuth = 30,
  elevation = 30,
  strength = 10,
  sigma = 0,
  blend_type = "overlay"
)

variably_blur_raster(
  x,
  x_sigma,
  y_sigma = x_sigma,
  angle = NULL,
  x_scale = 1,
  y_scale = x_scale,
  angle_range = 0
)

Value

A nativeRaster object

ggfx documentation built on Aug. 8, 2025, 7:18 p.m.