From c0d8f8e6e81277a936ec6cea53f9272fdcfc119c Mon Sep 17 00:00:00 2001 From: surtur Date: Mon, 20 Jun 2022 03:32:48 +0200 Subject: [PATCH] go(algo): rework the plotting func, add util.go --- algo/algo.go | 11 ++++++ algo/algo_test.go | 8 +++-- algo/plot.go | 79 +++++++++++++++++++++++++++++++++++++++++ algo/util.go | 10 ++++++ flake.nix | 2 +- go.mod | 17 +++++++-- go.sum | 89 +++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 210 insertions(+), 6 deletions(-) create mode 100644 algo/util.go diff --git a/algo/algo.go b/algo/algo.go index ca1a3b3..6763d3a 100644 --- a/algo/algo.go +++ b/algo/algo.go @@ -11,11 +11,22 @@ // methods over it. type Values []float64 +var picPath = "res/" + // DoRandomSearch executes a search using the 'Random search' method. func DoRandomSearch(wg *sync.WaitGroup) { defer wg.Done() printRandomSearch("starting...") + + // ng y'all. + schw := RandomSearchNG(10000, 30, []int{5, 10, 20}, "Schwefel") + djg1 := RandomSearchNG(10000, 30, []int{5, 10, 20}, "De Jong 1st") + djg2 := RandomSearchNG(10000, 30, []int{5, 10, 20}, "De Jong 2nd") + + plotAllDims(schw, "plot", ".svg") + plotAllDims(djg1, "plot", ".svg") + plotAllDims(djg2, "plot", ".svg") } // DoStochasticHillClimbing performs a search using the 'Stochastic Hill diff --git a/algo/algo_test.go b/algo/algo_test.go index 188ad51..ea9dcc5 100644 --- a/algo/algo_test.go +++ b/algo/algo_test.go @@ -11,11 +11,13 @@ var wg sync.WaitGroup func TestDoRandomSearchExec(t *testing.T) { - wg.Add(1) + // TODO(me): figure out how to test this. - go DoRandomSearch(&wg) + // wg.Add(1) - wg.Wait() + // go DoRandomSearch(&wg) + + // wg.Wait() } func TestDoSHCExec(t *testing.T) { diff --git a/algo/plot.go b/algo/plot.go index b7868e8..2a19d14 100644 --- a/algo/plot.go +++ b/algo/plot.go @@ -2,3 +2,82 @@ // SPDX-License-Identifier: GPL-3.0-or-later package algo + +import ( + "fmt" + "log" + + "git.dotya.ml/wanderer/math-optim/stats" + "gonum.org/v1/plot" + "gonum.org/v1/plot/plotter" + "gonum.org/v1/plot/plotutil" + "gonum.org/v1/plot/vg" +) + +func plotAllDims(allStats []stats.Stats, fPrefix, fExt string) { + pWidth := 13 * vg.Centimeter + pHeight := 13 * vg.Centimeter + + for _, s := range allStats { + p := plot.New() + p.Title.Text = s.Algo + ", D=" + fmt.Sprint(s.Dimens) + + ", func=" + s.BenchFuncStats[0].BenchName + + ", G=" + fmt.Sprint(s.Generations) + + ", I=" + fmt.Sprint(s.Iterations) + p.X.Label.Text = "Generations" + p.Y.Label.Text = "CF value" + + p.Legend.Top = true + p.Legend.Padding = 0 * vg.Centimeter + p.Add(plotter.NewGrid()) + + for _, dim := range s.BenchFuncStats { + // infinite thanks to this SO comment for the interface "hack": + // https://stackoverflow.com/a/44872993 + lines := make([]interface{}, 0) + + for j, iter := range dim.Solution { + // mark the end of the X axis with len(iter.Results). + p.X.Max = float64(len(iter.Results)) + + pts := make(plotter.XYs, len(iter.Results)) + + // fill the plotter with datapoints. + for k, res := range iter.Results { + pts[k].X = float64(k) + pts[k].Y = res + } + + lines = append(lines, "#"+fmt.Sprint(j), pts) + } + + err := plotutil.AddLines( + p, + lines..., + ) + if err != nil { + log.Fatal(err) + } + + filename := picPath + + fPrefix + "-" + + sanitiseFName(s.Algo) + "-" + + sanitiseFName(dim.BenchName) + "-" + + fmt.Sprint(s.Dimens) + "D-" + + fmt.Sprint(s.Generations) + "G-" + + fmt.Sprint(len(dim.Solution)) + "I" + + fExt + + printRandomSearch("saving img to file: " + filename) + + // Save the plot to a file using the above-constructed 'filename'. + if err := p.Save( + pWidth, + pHeight, + filename, + ); err != nil { + panic(err) + } + } + } +} diff --git a/algo/util.go b/algo/util.go new file mode 100644 index 0000000..f1ede0c --- /dev/null +++ b/algo/util.go @@ -0,0 +1,10 @@ +// Copyright 2022 wanderer +// SPDX-License-Identifier: GPL-3.0-or-later + +package algo + +import "strings" + +func sanitiseFName(s string) string { + return strings.ReplaceAll(s, " ", "_") +} diff --git a/flake.nix b/flake.nix index cf5aa4d..c437896 100644 --- a/flake.nix +++ b/flake.nix @@ -80,7 +80,7 @@ modSha256 = lib.fakeSha256; # dont't forget to update vendorSha256 whenever go.mod or go.sum change - vendorSha256 = "sha256-NpZWn2yASg7HXr4sG849QSgUetouj8qjwS+p5jhlum0="; + vendorSha256 = "sha256-JNvU72sb0m5bvKz/D6VAGsQiPh2lKt7N2DuhaOp6XA4="; # In 'nix develop', we don't need a copy of the source tree # in the Nix store. diff --git a/go.mod b/go.mod index 48a6e44..62c0339 100644 --- a/go.mod +++ b/go.mod @@ -2,6 +2,19 @@ module git.dotya.ml/wanderer/math-optim go 1.18 -require gonum.org/v1/gonum v0.11.0 +require ( + gonum.org/v1/gonum v0.11.0 + gonum.org/v1/plot v0.10.1 +) -require golang.org/x/exp v0.0.0-20191002040644-a1355ae1e2c3 // indirect +require ( + git.sr.ht/~sbinet/gg v0.3.1 // indirect + github.com/ajstarks/svgo v0.0.0-20211024235047-1546f124cd8b // indirect + github.com/go-fonts/liberation v0.2.0 // indirect + github.com/go-latex/latex v0.0.0-20210823091927-c0d11ff05a81 // indirect + github.com/go-pdf/fpdf v0.6.0 // indirect + github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect + golang.org/x/exp v0.0.0-20191002040644-a1355ae1e2c3 // indirect + golang.org/x/image v0.0.0-20220302094943-723b81ca9867 // indirect + golang.org/x/text v0.3.7 // indirect +) diff --git a/go.sum b/go.sum index 93d541c..eec4d71 100644 --- a/go.sum +++ b/go.sum @@ -1,23 +1,112 @@ dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +gioui.org v0.0.0-20210308172011-57750fc8a0a6/go.mod h1:RSH6KIUZ0p2xy5zHDxgAM4zumjgTw83q2ge/PI+yyw8= +git.sr.ht/~sbinet/gg v0.3.1 h1:LNhjNn8DerC8f9DHLz6lS0YYul/b602DUxDgGkd/Aik= +git.sr.ht/~sbinet/gg v0.3.1/go.mod h1:KGYtlADtqsqANL9ueOFkWymvzUvLMQllU5Ixo+8v3pc= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod 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