Makie

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qqplot ​

# Makie.qqplot — Function.
julia
qqplot(x, y; kwargs...)

Draw a Q-Q plot, comparing quantiles of two distributions. y must be a list of samples, i.e., AbstractVector{<:Real}, whereas x can be

  • a list of samples,

  • an abstract distribution, e.g. Normal(0, 1),

  • a distribution type, e.g. Normal.

In the last case, the distribution type is fitted to the data y.

The attribute qqline (defaults to :none) determines how to compute a fit line for the Q-Q plot. Possible values are the following.

  • :identity draws the identity line.

  • :fit computes a least squares line fit of the quantile pairs.

  • :fitrobust computes the line that passes through the first and third quartiles of the distributions.

  • :none omits drawing the line.

Broadly speaking, qqline = :identity is useful to see if x and y follow the same distribution, whereas qqline = :fit and qqline = :fitrobust are useful to see if the distribution of y can be obtained from the distribution of x via an affine transformation.

Plot type

The plot type alias for the qqplot function is QQPlot.

source


Examples ​

Test if xs and ys follow the same distribution.

julia
using CairoMakie
xs = randn(100)
ys = randn(100)

qqplot(xs, ys, qqline = :identity)

Attributes ​

color ​

Defaults to @inherit linecolor

Control color of both line and markers (if markercolor is not specified).

cycle ​

Defaults to [:color]

No docs available.

depth_shift ​

Defaults to 0.0

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).

fxaa ​

Defaults to true

adjusts whether the plot is rendered with fxaa (anti-aliasing, GLMakie only).

inspectable ​

Defaults to true

sets whether this plot should be seen by DataInspector.

inspector_clear ​

Defaults to automatic

Sets a callback function (inspector, plot) -> ... for cleaning up custom indicators in DataInspector.

inspector_hover ​

Defaults to automatic

Sets a callback function (inspector, plot, index) -> ... which replaces the default show_data methods.

inspector_label ​

Defaults to automatic

Sets a callback function (plot, index, position) -> string which replaces the default label generated by DataInspector.

linestyle ​

Defaults to nothing

No docs available.

linewidth ​

Defaults to @inherit linewidth

No docs available.

marker ​

Defaults to @inherit marker

No docs available.

markercolor ​

Defaults to automatic

No docs available.

markersize ​

Defaults to @inherit markersize

No docs available.

model ​

Defaults to automatic

Sets a model matrix for the plot. This overrides adjustments made with translate!, rotate! and scale!.

overdraw ​

Defaults to false

Controls if the plot will draw over other plots. This specifically means ignoring depth checks in GL backends

space ​

Defaults to :data

sets the transformation space for box encompassing the plot. See Makie.spaces() for possible inputs.

ssao ​

Defaults to false

Adjusts whether the plot is rendered with ssao (screen space ambient occlusion). Note that this only makes sense in 3D plots and is only applicable with fxaa = true.

strokecolor ​

Defaults to @inherit markerstrokecolor

No docs available.

strokewidth ​

Defaults to @inherit markerstrokewidth

No docs available.

transformation ​

Defaults to automatic

No docs available.

transparency ​

Defaults to false

Adjusts how the plot deals with transparency. In GLMakie transparency = true results in using Order Independent Transparency.

visible ​

Defaults to true

Controls whether the plot will be rendered or not.