Input jpg heatmap, color scale, table dimensions. Output matrix of corresponding values.

Input jpg heatmap, color scale, table dimensions. Output matrix of corresponding values.

heatmapExtract(
  heatmap,
  scale,
  scale_range = c(1, 0),
  scale_direction = "vertical",
  table_dim,
  n_samples = 1,
  verbose = TRUE
)

Arguments

heatmap

Either image array or path to cropped jpg containing heatmap color info

scale

Either image array or path to cropped jpg containing color scale info

scale_range

Numeric vector of length two containing in order the topmost and bottommost (or leftmost and rightmost) value in the color scale.

scale_direction

Character vector, "vertical" or "horizontal" describing color scale orientation.

table_dim

Numeric vector of length two containing in order the number of rows and number of columns in the heatmap image

n_samples

Number of pixels to sample per cell. By default, heatmapExtract estimates the central pixel of each cell based on the heatmap pixel dimensions and table_dim. If n_samples is set > 1, then heatmapExtract will average across multiple near-central pixels.

verbose

Logical, if true then debugging information will be printed.