Bland.Series.Heatmap (Elixir Technical Drawing v0.2.0)

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2D grid rendered as hatched cells. See Bland.heatmap/3 and Bland.Heatmap.

Fields:

  • :data — list of rows; each row is a list of numbers. With origin: :bottom_left (default), data is addressed data[row][col] where row 0 is the bottom row.
  • :x_edges — list of length cols + 1 giving column boundaries
  • :y_edges — list of length rows + 1 giving row boundaries
  • :ramp — list of pattern presets (light → dark). The cell value is quantized to length(ramp) levels.
  • :range — {lo, hi} used for quantization. :auto derives from data.
  • :origin — :bottom_left (default) or :top_left for matrix-style display where row 0 is the top row.