# Violin plots

Summary: This example shows how to create violin plot charts in F#.

let's first create some data for the purpose of creating example charts:

open Plotly.NET

let y =  [2.; 1.5; 5.; 1.5; 3.; 2.5; 2.5; 1.5; 3.5; 1.]
let x = ["bin1";"bin2";"bin1";"bin2";"bin1";"bin2";"bin1";"bin1";"bin2";"bin1"]


A violin plot is a method of plotting numeric data. It is similar to box plot with a rotated kernel density plot on each side. The violin plot is similar to box plots, except that they also show the probability density of the data at different values.

let violin1 =
Chart.Violin (
x,y,
Points=StyleParam.Jitterpoints.All
)


By swapping x and y plus using StyleParam.Orientation.Horizontal we can flip the chart horizontaly.

let violin2 =
Chart.Violin(
y,x,
Jitter=0.1,
Points=StyleParam.Jitterpoints.All,
Orientation=StyleParam.Orientation.Horizontal,
Meanline=Meanline.init(Visible=true)
)


You can also produce a violin plot using the Chart.Combine syntax.

let y' =  [2.; 1.5; 5.; 1.5; 2.; 2.5; 2.1; 2.5; 1.5; 1.;2.; 1.5; 5.; 1.5; 3.; 2.5; 2.5; 1.5; 3.5; 1.]

let violin3 =
[
Chart.Violin ("y" ,y,Name="bin1",Jitter=0.1,Points=StyleParam.Jitterpoints.All);
Chart.Violin ("y'",y',Name="bin2",Jitter=0.1,Points=StyleParam.Jitterpoints.All);
]
|> Chart.combine

namespace Plotly
namespace Plotly.NET
val y : float list
val x : string list
val violin1 : GenericChart.GenericChart
type Chart = static member Area : x:seq<#IConvertible> * y:seq<#IConvertible> * ?Name:string * ?ShowMarkers:bool * ?Showlegend:bool * ?MarkerSymbol:Symbol * ?Color:string * ?Opacity:float * ?Labels:seq<#IConvertible> * ?TextPosition:TextPosition * ?TextFont:Font * ?Dash:DrawingStyle * ?Width:float -> GenericChart + 1 overload static member Bar : keys:seq<#IConvertible> * values:seq<#IConvertible> * ?Name:string * ?Showlegend:bool * ?Color:string * ?Opacity:float * ?Labels:seq<#IConvertible> * ?TextPosition:TextPosition * ?TextFont:Font * ?Marker:Marker -> GenericChart + 1 overload static member BarPolar : r:seq<#IConvertible> * theta:seq<#IConvertible> * ?Name:string * ?Showlegend:bool * ?Color:string * ?Opacity:float * ?Labels:seq<#IConvertible> * ?TextPosition:TextPosition * ?TextFont:Font * ?Dash:DrawingStyle * ?LineWidth:float -> GenericChart static member BoxPlot : ?x:'a0 * ?y:'a1 * ?Name:string * ?Showlegend:bool * ?Color:string * ?Fillcolor:'a2 * ?Opacity:float * ?Whiskerwidth:'a3 * ?Boxpoints:Boxpoints * ?Boxmean:BoxMean * ?Jitter:'a4 * ?Pointpos:'a5 * ?Orientation:Orientation * ?Marker:Marker * ?Line:Line * ?Alignmentgroup:'a6 * ?Offsetgroup:'a7 * ?Notched:bool * ?NotchWidth:float * ?QuartileMethod:QuartileMethod -> GenericChart + 1 overload static member Bubble : x:seq<#IConvertible> * y:seq<#IConvertible> * sizes:seq<#IConvertible> * ?Name:string * ?Showlegend:bool * ?MarkerSymbol:Symbol * ?Color:string * ?Opacity:float * ?Labels:seq<#IConvertible> * ?TextPosition:TextPosition * ?TextFont:Font * ?StackGroup:string * ?Orientation:Orientation * ?GroupNorm:GroupNorm * ?UseWebGL:bool -> GenericChart + 1 overload static member Bubble3d : x:seq<#IConvertible> * y:seq<#IConvertible> * z:seq<#IConvertible> * sizes:seq<#IConvertible> * ?Name:string * ?Showlegend:bool * ?MarkerSymbol:Symbol * ?Color:string * ?Opacity:float * ?Labels:seq<#IConvertible> * ?TextPosition:TextPosition * ?TextFont:Font -> GenericChart + 1 overload static member BubblePolar : r:seq<#IConvertible> * theta:seq<#IConvertible> * sizes:seq<#IConvertible> * ?Name:string * ?Showlegend:bool * ?MarkerSymbol:Symbol * ?Color:string * ?Opacity:float * ?Labels:seq<#IConvertible> * ?TextPosition:TextPosition * ?TextFont:Font * ?UseWebGL:bool -> GenericChart + 1 overload static member Candlestick : open:seq<#IConvertible> * high:seq<#IConvertible> * low:seq<#IConvertible> * close:seq<#IConvertible> * x:seq<#IConvertible> * ?Increasing:Line * ?Decreasing:Line * ?WhiskerWidth:float * ?Line:Line * ?XCalendar:Calendar -> GenericChart + 1 overload static member ChoroplethMap : locations:seq<string> * z:seq<#IConvertible> * ?Text:seq<#IConvertible> * ?Locationmode:LocationFormat * ?Autocolorscale:bool * ?Colorscale:Colorscale * ?ColorBar:ColorBar * ?Marker:Marker * ?GeoJson:'a2 * ?FeatureIdKey:string * ?Zmin:float * ?Zmax:float -> GenericChart static member ChoroplethMapbox : locations:seq<#IConvertible> * z:seq<#IConvertible> * geoJson:'a2 * ?FeatureIdKey:string * ?Text:seq<#IConvertible> * ?Below:string * ?Colorscale:Colorscale * ?ColorBar:ColorBar * ?ZAuto:bool * ?ZMin:float * ?ZMid:float * ?ZMax:float -> GenericChart ...
<summary> Provides a set of static methods for creating charts. </summary>
static member Chart.Violin : xy:seq<'a0 * 'a1> * ?Name:string * ?Showlegend:bool * ?Color:string * ?Fillcolor:'a2 * ?Opacity:float * ?Points:StyleParam.Boxpoints * ?Jitter:'a3 * ?Pointpos:'a4 * ?Orientation:StyleParam.Orientation * ?Width:'a5 * ?Marker:Marker * ?Line:Line * ?Alignmentgroup:'a6 * ?Offsetgroup:'a7 * ?Box:Box * ?Bandwidth:'a8 * ?Meanline:Meanline * ?Scalegroup:'a9 * ?Scalemode:'a10 * ?Side:'a11 * ?Span:'a12 * ?SpanMode:'a13 * ?Uirevision:'a14 -> GenericChart.GenericChart
static member Chart.Violin : ?x:'a * ?y:'b * ?Name:string * ?Showlegend:bool * ?Color:string * ?Fillcolor:'c * ?Opacity:float * ?Points:StyleParam.Boxpoints * ?Jitter:'d * ?Pointpos:'e * ?Orientation:StyleParam.Orientation * ?Width:'f * ?Marker:Marker * ?Line:Line * ?Alignmentgroup:'g * ?Offsetgroup:'h * ?Box:Box * ?Bandwidth:'i * ?Meanline:Meanline * ?Scalegroup:'j * ?Scalemode:'k * ?Side:'l * ?Span:'m * ?SpanMode:'n * ?Uirevision:'o -> GenericChart.GenericChart
module StyleParam from Plotly.NET
type Jitterpoints = StyleParam.Boxpoints
union case StyleParam.Boxpoints.All: StyleParam.Boxpoints
module GenericChart from Plotly.NET
<summary> Module to represent a GenericChart </summary>
val toChartHTML : gChart:GenericChart.GenericChart -> string
<summary> Converts a GenericChart to it HTML representation. The div layer has a default size of 600 if not specified otherwise. </summary>
val violin2 : GenericChart.GenericChart
type Orientation = | Horizontal | Vertical static member convert : (Orientation -> obj) static member toString : (Orientation -> string)
union case StyleParam.Orientation.Horizontal: StyleParam.Orientation
Multiple items
type Meanline = inherit DynamicObj new : unit -> Meanline static member init : ?Visible:bool * ?Color:string * ?Width:float -> Meanline static member style : ?Visible:bool * ?Color:string * ?Width:float -> (Meanline -> Meanline)
<summary> Meanline type inherits from dynamic object (parent violin) </summary>

--------------------
new : unit -> Meanline
static member Meanline.init : ?Visible:bool * ?Color:string * ?Width:float -> Meanline
val y' : float list
val violin3 : GenericChart.GenericChart
static member Chart.combine : gCharts:seq<GenericChart.GenericChart> -> GenericChart.GenericChart