Add an "image" layer to a Bokeh figure

Source: R/layer_image.R

Draws a grid of rectangles with colors corresponding to the values in z

ly_image(
  fig,
  z,
  rows,
  byrow = TRUE,
  x = 0,
  y = 0,
  dw = 1,
  dh = 1,
  palette = "Spectral10",
  dilate = FALSE,
  lname = NULL,
  lgroup = NULL
)

Arguments

fig

figure to modify
z

matrix or vector of image values
rows

if z is a vector, how many rows should be used in treating it as a matrix
byrow

if z is a vector, should it be turned into a matrix by row
x

lower left x coordinates
y

lower left y coordinates
dw

image width distances
dh

image height distances
palette

name of color palette to use for color ramp (see here for acceptable values)
dilate

logical - whether to dilate pixel distance computations when drawing
lname

layer name
lgroup

layer group

See also

Other layer functions: ly_abline(), ly_annular_wedge(), ly_annulus(), ly_arc(), ly_bar(), ly_bezier(), ly_boxplot(), ly_contour(), ly_crect(), ly_curve(), ly_density(), ly_hist(), ly_image_url(), ly_lines(), ly_map(), ly_multi_line(), ly_oval(), ly_patch(), ly_points(), ly_polygons(), ly_quadratic(), ly_quantile(), ly_ray(), ly_rect(), ly_segments(), ly_text(), ly_wedge()

Examples

# \donttest{
p <- figure(xlim = c(0, 1), ylim = c(0, 1), title = "Volcano") %>%
  ly_image(volcano) %>%
  ly_contour(volcano)
p
# }