rbokeh (version 0.5.2)

ly_image_url: Add an "image_url" layer to a Bokeh figure

Description

Renders raster images from URLs at provided coordinates

Usage

ly_image_url(
  fig,
  x = 0,
  y = 0,
  data = figure_data(fig),
  w = 10,
  h = 10,
  image_url,
  dilate = TRUE,
  anchor = "top_left",
  angle = 0,
  lname = NULL,
  lgroup = NULL
)

Arguments

fig

figure to modify

x

x coordinates

y

y coordinates

data

an optional data frame, providing the source for inputs x, y, and other properties

w, h

values or field names of width and height of image

image_url

values or field name of image URLs

dilate

logical - whether to dilate pixel distance computations when drawing

anchor

where the image is anchored to with respect to x and y

angle

values or field name of the angle to rotate the image, in radians

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(), 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

# NOT RUN {
url <- c("  http://bokeh.pydata.org/en/latest/_static/images/logo.png",
  "http://developer.r-project.org/Logo/Rlogo-4.png")

ss <- seq(0, 2*pi, length = 13)[-1]
ws <- runif(12, 2.5, 5) * rep(c(1, 0.8), 6)

imgdat <- data.frame(
  x = sin(ss) * 10, y = cos(ss) * 10,
  w = ws, h = ws * rep(c(1, 0.76), 6),
  url = rep(url, 6)
)

p <- figure(xlab = "x", ylab = "y") %>%
  ly_image_url(x, y, w = w, h = h, image_url = url, data = imgdat,
    anchor = "center") %>%
  ly_lines(sin(c(ss, ss[1])) * 10, cos(c(ss, ss[1])) * 10,
    width = 15, alpha = 0.1)
p
# }