stem

Makie.stem Function

stem(xs, ys, [zs]; kwargs...)

Plots markers at the given positions with stem lines extending from offset. All stems are connected to a trunk line.

The conversion trait of stem is PointBased.

Plot type

The plot type alias for the stem function is Stem.

source

Examples

using CairoMakie
f = Figure()
Axis(f[1, 1])

xs = LinRange(0, 4pi, 30)

stem!(xs, sin.(xs))

f

using CairoMakie
f = Figure()
Axis(f[1, 1])

xs = LinRange(0, 4pi, 30)

stem!(xs, sin,
    offset = 0.5, trunkcolor = :blue, marker = :rect,
    stemcolor = :red, color = :orange,
    markersize = 15, strokecolor = :red, strokewidth = 3,
    trunklinestyle = :dash, stemlinestyle = :dashdot)

f

using CairoMakie
f = Figure()
Axis(f[1, 1])

xs = LinRange(0, 4pi, 30)

stem!(xs, sin.(xs),
    offset = LinRange(-0.5, 0.5, 30),
    color = LinRange(0, 1, 30), colorrange = (0, 0.5),
    trunkcolor = LinRange(0, 1, 30), trunkwidth = 5)

f

using GLMakie
f = Figure()

xs = LinRange(0, 4pi, 30)

stem(f[1, 1], 0.5xs, 2 .* sin.(xs), 2 .* cos.(xs),
    offset = Point3f.(0.5xs, sin.(xs), cos.(xs)),
    stemcolor = LinRange(0, 1, 30), stemcolormap = :Spectral, stemcolorrange = (0, 0.5))

f

Attributes

clip_planes

Defaults to @inherit clip_planes automatic

Clip planes offer a way to do clipping in 3D space. You can set a Vector of up to 8 Plane3f planes here, behind which plots will be clipped (i.e. become invisible). By default clip planes are inherited from the parent plot or scene. You can remove parent clip_planes by passing Plane3f[].

color

Defaults to @inherit markercolor

Sets the color of markers.

colormap

Defaults to @inherit colormap

Sets the colormap of markers.

colorrange

Defaults to automatic

Sets the colorrange for markers.

colorscale

Defaults to identity

Sets the colorscale function for the trunk, stems and markers.

cycle

Defaults to [[:stemcolor, :color, :trunkcolor] => :color]

Sets which attributes to cycle when creating multiple plots. The values to cycle through are defined by the parent Theme. Multiple cycled attributes can be set by passing a vector. Elements can

• directly refer to a cycled attribute, e.g. :color

• map a cycled attribute to a palette attribute, e.g. :linecolor => :color

• map multiple cycled attributes to a palette attribute, e.g. [:linecolor, :markercolor] => :color

depth_shift

Defaults to 0.0

Adjusts the depth value of a plot after all other transformations, i.e. in clip space, where -1 <= 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 (fast approximate anti-aliasing, GLMakie only). Note that some plots implement a better native anti-aliasing solution (scatter, text, lines). For them fxaa = true generally lowers quality. Plots that show smoothly interpolated data (e.g. image, surface) may also degrade in quality as fxaa = true can cause blurring.

inspectable

Defaults to @inherit inspectable

Sets whether this plot should be seen by DataInspector. The default depends on the theme of the parent scene.

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.

marker

Defaults to :circle

Sets the marker used for the endpoints of stems

markersize

Defaults to @inherit markersize

Sets the size of markers in pixel units.

model

Defaults to automatic

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

offset

Defaults to 0

Offsets the trunk and stem startpoint from 0. Can be a number, in which case it sets y for 2D, and z for 3D stems. It can be a Point2 for 2D plots, as well as a Point3 for 3D plots. It can also be an iterable of any of these at the same length as xs, ys, zs.

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.

stemcolor

Defaults to @inherit linecolor

Sets the color of stem lines. Can be a Symbol, Colorant, Real or Vector thereof.

stemcolormap

Defaults to @inherit colormap

Sets the colormap for stem lines which maps numbers to colors.

stemcolorrange

Defaults to automatic

Sets the colorrange for stem lines which limits the value range for colormapping.

stemlinestyle

Defaults to nothing

Sets the linestyle of stem lines. See ?lines.

stemwidth

Defaults to @inherit linewidth

Sets the linewidth of stems.

strokecolor

Defaults to @inherit markerstrokecolor

Sets the strokecolor of markers.

strokewidth

Defaults to @inherit markerstrokewidth

Sets the strokewidth of markers.

transformation

Defaults to :automatic

Controls the inheritance or directly sets the transformations of a plot. Transformations include the transform function and model matrix as generated by translate!(...), scale!(...) and rotate!(...). They can be set directly by passing a Transformation() object or inherited from the parent plot or scene. Inheritance options include:

• :automatic: Inherit transformations if the parent and child space is compatible

• :inherit: Inherit transformations

• :inherit_model: Inherit only model transformations

• :inherit_transform_func: Inherit only the transform function

• :nothing: Inherit neither, fully disconnecting the child's transformations from the parent

Another option is to pass arguments to the transform!() function which then get applied to the plot. For example transformation = (:xz, 1.0) which rotates the xy plane to the xz plane and translates by 1.0. For this inheritance defaults to :automatic but can also be set through e.g. (:nothing, (:xz, 1.0)).

transparency

Defaults to false

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

trunkcolor

Defaults to @inherit linecolor

Sets the color for the trunk line.

trunkcolormap

Defaults to @inherit colormap

Sets the colormap for the trunk line.

trunkcolorrange

Defaults to automatic

Sets the colorrange for the trunk line.

trunklinestyle

Defaults to nothing

Sets the linestyle for the trunk line.

trunkwidth

Defaults to @inherit linewidth

Sets the linewidth for the trunk line.

visible

Defaults to true

Controls whether the plot gets rendered or not.