class

UnicodePlot::HeatmapGraphics

Inherits UnicodePlot::GraphicsArea < Reference < Object

HeatmapGraphics renders a 2D color matrix using half-block characters (▄). Each display row combines two data rows: upper half (bg) and lower half (fg). This matches Julia's HeatmapCanvas layout.

Constructors

new(data : Array(Array(Float64)), colormap_fn : Proc(Float64, Float64, Float64, UInt32), zmin : Float64, zmax : Float64, visible : Bool = true, yflip : Bool = false)

Source

Instance methods

blank

colormap_fn

data

ncols

nrows

print_row(io : IO, row : Int32, use_color : Bool) : Nil

Render one display row using two data rows packed as half-block characters. Row 1 = topmost display row. Each display row uses pixel rows 2r-1 and 2r (adjusted for odd char_height), matching Julia's HeatmapCanvas.print_row.

visible?

yflip?

zmax

zmin