Heatmaps

PixelMap(pixels, lowerleft, upperright; kwargs...)

A graphics primitive representing a two-dimensional array of pixels situated in the box with given lower left and upper right corners.

pixels is an array of NamedColors, while lowerleft and upperright are tuples.

Examples

julia> pixels = [x*NamedColor("blue") + 
                    (1-x)*NamedColor("red") 
                        for x in 0:0.1:1, y in 0:0.1:1]
julia> PixelMap(pixels, (0,0), (1,1))
PixelMap(<11×11>,[0,1]×[0,1])

heatmap(A; colors)
heatmap(A, lowerleft, upperright; colors)
heatmap(xs, ys, f::Function)

Plot a heatmap of the values stored in the matrix A, using the colormap represented by the vector colors of NamedColors. Place the resulting PixelMap according to the given lowerleft and upperright tuples (which default to (0,0) and size(A)).

Examples

julia> heatmap(0:10, 0:10, (x,y) -> x^2 + y^2)