heatmap

heatmap(x, y, values)
heatmap(values)

Plots a heatmap as an image on x, y (defaults to interpretation as dimensions).

Attributes

Generic

visible::Bool = true sets whether the plot will be rendered or not.
overdraw::Bool = false sets whether the plot will draw over other plots. This specifically means ignoring depth checks in GL backends.
transparency::Bool = false adjusts how the plot deals with transparency. In GLMakie transparency = true results in using Order Independent Transparency.
fxaa::Bool = true adjusts whether the plot is rendered with fxaa (anti-aliasing).
inspectable::Bool = true sets whether this plot should be seen by DataInspector .
depth_shift::Float32 = 0f0 adjusts the depth value of a plot after all other transformations, i.e. in clip space, where 0 <= depth <= 1 . This only applies to GLMakie and WGLMakie and can be used to adjust render order (like a tunable overdraw).
model::Makie.Mat4f sets a model matrix for the plot. This replaces adjustments made with translate! , rotate! and scale! .
color is set by the plot.
colormap::Union{Symbol, Vector{<:Colorant}} = :viridis sets the colormap that is sampled for numeric color s.
colorrange::Tuple{<:Real, <:Real} sets the values representing the start and end points of colormap .
nan_color::Union{Symbol, <:Colorant} = RGBAf(0,0,0,0) sets a replacement color for color = NaN .

Other

lowclip::Union{Nothing, Symbol, <:Colorant} = nothing sets a color for any value below the colorrange.
highclip::Union{Nothing, Symbol, <:Colorant} = nothing sets a color for any value above the colorrange.
interpolate::Bool = false sets whether colors should be interpolated.

Examples

Two vectors and a matrix

using CairoMakie


xs = range(0, 10, length = 25)
ys = range(0, 15, length = 25)
zs = [cos(x) * sin(y) for x in xs, y in ys]

heatmap(xs, ys, zs)

Two ranges and a function

using CairoMakie

function mandelbrot(x, y)
    z = c = x + y*im
    for i in 1:30.0; abs(z) > 2 && return i; z = z^2 + c; end; 0
end

heatmap(-2:0.1:1, -1.1:0.1:1.1, mandelbrot,
    colormap = Reverse(:deep))

Three vectors

There must be no duplicate combinations of x and y, but it is allowed to leave out values.

using CairoMakie


xs = [1, 2, 3, 1, 2, 3, 1, 2, 3]
ys = [1, 1, 1, 2, 2, 2, 3, 3, 3]
zs = [1, 2, 3, 4, 5, 6, 7, 8, NaN]

heatmap(xs, ys, zs)

Colors

Using the previous example, we can see how to change the color of our plot. You can find additional colors here .

These docs were autogenerated using Makie: v0.16.6, GLMakie: v0.5.5, CairoMakie: v0.7.5, WGLMakie: v0.5.5

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