Add an "image" layer to a Bokeh figure

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Description

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

Usage

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

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

visible

should the layer be visible?

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

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

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