Summary: This example shows how to create 3D-IsoSurface charts in F#.
let's first create some data for the purpose of creating example charts:
open System
open Plotly.NET
let linspace (min,max,n) =
if n <= 2 then failwithf "n needs to be larger then 2"
let bw = float (max - min) / (float n - 1.)
Array.init n (fun i -> min + (bw * float i))
let mgrid (min,max,n) =
let data = linspace(min,max,n)
let z = [|for i in 1 .. n do [|for i in 1 .. n do yield data|]|]
let x = [|for i in 1 .. n do [|for j in 1 .. n do yield [|for k in 1 .. n do yield data.[i-1]|]|]|]
let y = [|for i in 1 .. n do [|for j in 1 .. n do yield [|for k in 1 .. n do yield data.[j-1]|]|]|]
x,y,z
let xIso,yIso,zIso =
mgrid(-5.,5.,40)
|> fun (x,y,z) ->
(x |> Array.concat |> Array.concat),
(y |> Array.concat |> Array.concat),
(z |> Array.concat |> Array.concat)
let valueIso =
Array.map3 (fun x y z ->
x * x * 0.5 + y * y + z * z * 2.
) xIso yIso zIso
open Plotly.NET.TraceObjects
let isoSurface =
Chart.IsoSurface(
xIso,yIso,zIso,valueIso,
IsoMin = 10.,
IsoMax = 40.,
Caps = Caps.init(
X = (CapFill.init(Show=false)),
Y = (CapFill.init(Show=false))
),
Surface = Surface.init(Count=5)
)