Makie

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streamplot ​

Makie.streamplot Function
julia
streamplot(f::function, xinterval, yinterval; color = norm, kwargs...)

f must either accept f(::Point) or f(x::Number, y::Number). f must return a Point2.

Example:

julia
v(x::Point2{T}) where T = Point2f(x[2], 4*x[1])
streamplot(v, -2..2, -2..2)

Implementation

See the function Makie.streamplot_impl for implementation details.

Plot type

The plot type alias for the streamplot function is StreamPlot.

source

Examples ​

julia
using CairoMakie
struct FitzhughNagumo{T}
    ϵ::T
    s::T
    γ::T
    β::T
end

P = FitzhughNagumo(0.1, 0.0, 1.5, 0.8)

f(x, P::FitzhughNagumo) = Point2f(
    (x[1]-x[2]-x[1]^3+P.s)/P.ϵ,
    P.γ*x[1]-x[2] + P.β
)

f(x) = f(x, P)

fig, ax, pl = streamplot(f, -1.5..1.5, -1.5..1.5, colormap = :magma)
# you can also pass a function to `color`, to either return a number or color value
streamplot(fig[1,2], f, -1.5 .. 1.5, -1.5 .. 1.5, color=(p)-> RGBAf(p..., 0.0, 1))
fig

Attributes ​

alpha ​

Defaults to 1.0

The alpha value of the colormap or color attribute. Multiple alphas like in plot(alpha=0.2, color=(:red, 0.5), will get multiplied.

arrow_head ​

Defaults to automatic

No docs available.

arrow_size ​

Defaults to automatic

No docs available.

clip_planes ​

Defaults to 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 norm

One can choose the color of the lines by passing a function color_func(dx::Point) to the color attribute. This can be set to any function or composition of functions. The dx which is passed to color_func is the output of f at the point being colored.

colormap ​

Defaults to @inherit colormap :viridis

Sets the colormap that is sampled for numeric colors. PlotUtils.cgrad(...), Makie.Reverse(any_colormap) can be used as well, or any symbol from ColorBrewer or PlotUtils. To see all available color gradients, you can call Makie.available_gradients().

colorrange ​

Defaults to automatic

The values representing the start and end points of colormap.

colorscale ​

Defaults to identity

The color transform function. Can be any function, but only works well together with Colorbar for identity, log, log2, log10, sqrt, logit, Makie.pseudolog10 and Makie.Symlog10.

density ​

Defaults to 1.0

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).

gridsize ​

Defaults to (32, 32, 32)

No docs available.

highclip ​

Defaults to automatic

The color for any value above the colorrange.

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.

joinstyle ​

Defaults to @inherit joinstyle

No docs available.

linecap ​

Defaults to @inherit linecap

No docs available.

linestyle ​

Defaults to nothing

No docs available.

linewidth ​

Defaults to @inherit linewidth

No docs available.

lowclip ​

Defaults to automatic

The color for any value below the colorrange.

maxsteps ​

Defaults to 500

No docs available.

miter_limit ​

Defaults to @inherit miter_limit

No docs available.

model ​

Defaults to automatic

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

nan_color ​

Defaults to :transparent

The color for NaN values.

overdraw ​

Defaults to false

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

quality ​

Defaults to 16

No docs available.

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.

stepsize ​

Defaults to 0.01

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.