Gnuplot Swift

所以，您有一个很棒的 Swift 项目，需要绘图功能。您已经搜索了一圈，发现与其他编程语言（例如 Python，它有 [matplotlib]）相比，Swift 程序员可用的选项相当有限。

与其重新发明轮子，不如坚持经过验证的旧方法。使用这个围绕 gnuplot 的便捷封装器。

已在 Linux、macOS 和 Windows 下测试。也适用于 Swift Playground。

示例

import Gnuplot

do {
  let plot = Gnuplot(data: "")
  plot.settings["key"] = "below"
  plot.userPlot = "plot sin(x)"
  try plot(.pdf(path: "/Users/daniel/Desktop/sinus.pdf"))
}

var curves = [[[Double]]](repeating: [[Double]](), count: 3)
curves = [ // Supports array of arrays
  [[1,2],[2,4],[3,5],[4,6],[5,7]],
  [[1,3],[2,4],[3,6],[4,6],[5,8]],
  [[1,1],[2,2],[3,4],[4,5],[5,6]]]
  
let curves2 = [[[1,2,3,1],[2,4,4,2],[3,5,6,4],[4,6,6,5],[5,7,8,6]]] // also allowed same output as curves

let plot = Gnuplot(xys: curves, titles: ["Best1", "Best2", "Best3"])
.set(title: "Curves").set(xlabel: "Iteration").set(ylabel: "Foo")

plot.svg // string with SVG plot (executes gnuplot)

plot.image // macOS only (executes gnuplot)

plot.commands(.svg(path: "")) // returns the gnuplot commands 

try plot(.png(path: "Curves.png")) // execute gnuplot

初始化器

init<T>(xys: [[[T]]], titles: [String] = [], style: Style = .linePoints) where T : FloatingPoint

init<T>(xy1s: [[[T]]], xy2s: [[[T]]] = [], titles: [String] = [], style: Style = .linePoints) where T : FloatingPoint

convenience init<S, F>(xys: S..., titles: [String] = [], style: Style = .linePoints) where S : Sequence, F : FloatingPoint, F : SIMDScalar, S.Element == SIMD2<F>

convenience init<S, F>(xys: S..., titles: [String] = [], style: Style = .linePoints) where S : Sequence, F : FloatingPoint, S.Element == [F]

convenience init<S, F>(xs: S..., ys: S..., titles: String..., style: Style = .linePoints) where S : Collection, F : FloatingPoint, F == S.Element

convenience init<X, Y, F, S>(xs: X, ys: Y, titles: String..., style: Style = .linePoints) where X : Collection, Y : Collection, F : FloatingPoint, F == X.Element, S : SIMD, S == Y.Element, X.Element == S.Scalar

convenience init<T>(xy1s: [[T]]..., xy2s: [[T]]..., titles: String..., style: Style = .linePoints) where T : FloatingPoint