[4327] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[12012] | 3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[4327] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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[6975] | 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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[4327] | 25 | using System.Text;
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[6975] | 26 | using HeuristicLab.Common;
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| 27 | using HeuristicLab.Core;
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| 28 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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[4327] | 29 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 30 |
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[5745] | 31 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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[4969] | 32 | [Item("LaTeX String Formatter", "Formatter for symbolic expression trees for import into LaTeX documents.")]
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[5429] | 33 | [StorableClass]
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[5745] | 34 | public sealed class SymbolicDataAnalysisExpressionLatexFormatter : NamedItem, ISymbolicExpressionTreeStringFormatter {
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[8798] | 35 | private readonly List<double> constants;
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| 36 | private int targetCount;
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[5428] | 37 | private int currentLag;
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[4969] | 38 |
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[5429] | 39 | [StorableConstructor]
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[5745] | 40 | private SymbolicDataAnalysisExpressionLatexFormatter(bool deserializing) : base(deserializing) { }
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| 41 | private SymbolicDataAnalysisExpressionLatexFormatter(SymbolicDataAnalysisExpressionLatexFormatter original, Cloner cloner)
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[5429] | 42 | : base(original, cloner) {
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| 43 | constants = new List<double>(original.constants);
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| 44 | }
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[5745] | 45 | public SymbolicDataAnalysisExpressionLatexFormatter()
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| 46 | : base() {
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| 47 | Name = ItemName;
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| 48 | Description = ItemDescription;
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[4969] | 49 | constants = new List<double>();
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| 50 | }
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[4327] | 51 |
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[4900] | 52 | public override IDeepCloneable Clone(Cloner cloner) {
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[5745] | 53 | return new SymbolicDataAnalysisExpressionLatexFormatter(this, cloner);
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[4900] | 54 | }
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| 55 |
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[5745] | 56 | public string Format(ISymbolicExpressionTree symbolicExpressionTree) {
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[4327] | 57 | try {
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| 58 | StringBuilder strBuilder = new StringBuilder();
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[4969] | 59 | constants.Clear();
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[4327] | 60 | strBuilder.AppendLine(FormatRecursively(symbolicExpressionTree.Root));
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| 61 | return strBuilder.ToString();
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| 62 | }
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| 63 | catch (NotImplementedException ex) {
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| 64 | return ex.Message + Environment.NewLine + ex.StackTrace;
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| 65 | }
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| 66 | }
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| 67 |
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[5745] | 68 | private string FormatRecursively(ISymbolicExpressionTreeNode node) {
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[4327] | 69 | StringBuilder strBuilder = new StringBuilder();
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[5428] | 70 | currentLag = 0;
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[4327] | 71 | FormatBegin(node, strBuilder);
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| 72 |
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[6803] | 73 | if (node.SubtreeCount > 0) {
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[5745] | 74 | strBuilder.Append(FormatRecursively(node.GetSubtree(0)));
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[4327] | 75 | }
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[7140] | 76 | int i = 1;
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[5745] | 77 | foreach (SymbolicExpressionTreeNode subTree in node.Subtrees.Skip(1)) {
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[7140] | 78 | FormatSep(node, strBuilder, i);
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[4327] | 79 | // format the whole subtree
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| 80 | strBuilder.Append(FormatRecursively(subTree));
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[7140] | 81 | i++;
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[4327] | 82 | }
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| 83 |
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| 84 | FormatEnd(node, strBuilder);
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| 85 |
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| 86 | return strBuilder.ToString();
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| 87 | }
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| 88 |
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[5745] | 89 | private void FormatBegin(ISymbolicExpressionTreeNode node, StringBuilder strBuilder) {
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[4327] | 90 | if (node.Symbol is Addition) {
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[7446] | 91 | strBuilder.Append(@" \left( ");
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[4327] | 92 | } else if (node.Symbol is Subtraction) {
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[6803] | 93 | if (node.SubtreeCount == 1) {
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[7446] | 94 | strBuilder.Append(@"- \left( ");
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[5428] | 95 | } else {
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[7446] | 96 | strBuilder.Append(@" \left( ");
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[5428] | 97 | }
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[4327] | 98 | } else if (node.Symbol is Multiplication) {
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| 99 | } else if (node.Symbol is Division) {
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[6803] | 100 | if (node.SubtreeCount == 1) {
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[8798] | 101 | strBuilder.Append(@" \cfrac{1");
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[5428] | 102 | } else {
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| 103 | strBuilder.Append(@" \cfrac{ ");
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| 104 | }
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[4969] | 105 | } else if (node.Symbol is Average) {
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[5428] | 106 | // skip output of (1/1) if only one subtree
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[6803] | 107 | if (node.SubtreeCount > 1) {
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| 108 | strBuilder.Append(@" \cfrac{1}{" + node.SubtreeCount + @"}");
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[5428] | 109 | }
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[7446] | 110 | strBuilder.Append(@" \left( ");
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[4969] | 111 | } else if (node.Symbol is Logarithm) {
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[7446] | 112 | strBuilder.Append(@"\log \left( ");
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[4969] | 113 | } else if (node.Symbol is Exponential) {
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[7446] | 114 | strBuilder.Append(@"\exp \left( ");
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[7695] | 115 | } else if (node.Symbol is Square) {
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| 116 | strBuilder.Append(@"\left(");
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| 117 | } else if (node.Symbol is SquareRoot) {
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| 118 | strBuilder.Append(@"\sqrt{");
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[4969] | 119 | } else if (node.Symbol is Sine) {
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[7446] | 120 | strBuilder.Append(@"\sin \left( ");
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[4969] | 121 | } else if (node.Symbol is Cosine) {
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[7446] | 122 | strBuilder.Append(@"\cos \left( ");
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[4969] | 123 | } else if (node.Symbol is Tangent) {
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[7446] | 124 | strBuilder.Append(@"\tan \left( ");
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[7696] | 125 | } else if (node.Symbol is AiryA) {
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| 126 | strBuilder.Append(@"\operatorname{airy}_a \left( ");
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| 127 | } else if (node.Symbol is AiryB) {
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| 128 | strBuilder.Append(@"\operatorname{airy}_b \left( ");
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| 129 | } else if (node.Symbol is Bessel) {
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| 130 | strBuilder.Append(@"\operatorname{bessel}_1 \left( ");
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| 131 | } else if (node.Symbol is CosineIntegral) {
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| 132 | strBuilder.Append(@"\operatorname{cosInt} \left( ");
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| 133 | } else if (node.Symbol is Dawson) {
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| 134 | strBuilder.Append(@"\operatorname{dawson} \left( ");
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| 135 | } else if (node.Symbol is Erf) {
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| 136 | strBuilder.Append(@"\operatorname{erf} \left( ");
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| 137 | } else if (node.Symbol is ExponentialIntegralEi) {
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| 138 | strBuilder.Append(@"\operatorname{expInt}_i \left( ");
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| 139 | } else if (node.Symbol is FresnelCosineIntegral) {
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[7708] | 140 | strBuilder.Append(@"\operatorname{fresnel}_\operatorname{cosInt} \left( ");
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[7696] | 141 | } else if (node.Symbol is FresnelSineIntegral) {
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[7708] | 142 | strBuilder.Append(@"\operatorname{fresnel}_\operatorname{sinInt} \left( ");
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[7696] | 143 | } else if (node.Symbol is Gamma) {
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| 144 | strBuilder.Append(@"\Gamma \left( ");
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| 145 | } else if (node.Symbol is HyperbolicCosineIntegral) {
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| 146 | strBuilder.Append(@"\operatorname{hypCosInt} \left( ");
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| 147 | } else if (node.Symbol is HyperbolicSineIntegral) {
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| 148 | strBuilder.Append(@"\operatorname{hypSinInt} \left( ");
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[7697] | 149 | } else if (node.Symbol is Norm) {
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| 150 | strBuilder.Append(@"\operatorname{norm} \left( ");
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[7696] | 151 | } else if (node.Symbol is Psi) {
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| 152 | strBuilder.Append(@"\operatorname{digamma} \left( ");
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| 153 | } else if (node.Symbol is SineIntegral) {
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| 154 | strBuilder.Append(@"\operatorname{sinInt} \left( ");
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[4969] | 155 | } else if (node.Symbol is GreaterThan) {
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[7446] | 156 | strBuilder.Append(@" \left( ");
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[4969] | 157 | } else if (node.Symbol is LessThan) {
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[7446] | 158 | strBuilder.Append(@" \left( ");
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[4969] | 159 | } else if (node.Symbol is And) {
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[7451] | 160 | strBuilder.Append(@" \left( \left( ");
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[4969] | 161 | } else if (node.Symbol is Or) {
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[7451] | 162 | strBuilder.Append(@" \left( \left( ");
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[4969] | 163 | } else if (node.Symbol is Not) {
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[7446] | 164 | strBuilder.Append(@" \neg \left( ");
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[4969] | 165 | } else if (node.Symbol is IfThenElse) {
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[7446] | 166 | strBuilder.Append(@" \operatorname{if} \left( ");
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[4327] | 167 | } else if (node.Symbol is Constant) {
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[5428] | 168 | strBuilder.Append("c_{" + constants.Count + "} ");
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[4969] | 169 | var constNode = node as ConstantTreeNode;
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| 170 | constants.Add(constNode.Value);
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[5428] | 171 | } else if (node.Symbol is LaggedVariable) {
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| 172 | var laggedVarNode = node as LaggedVariableTreeNode;
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[7038] | 173 | if (!laggedVarNode.Weight.IsAlmost(1.0)) {
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| 174 | strBuilder.Append("c_{" + constants.Count + "} \\cdot ");
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| 175 | constants.Add(laggedVarNode.Weight);
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| 176 | }
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| 177 | strBuilder.Append(EscapeLatexString(laggedVarNode.VariableName));
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[5428] | 178 | strBuilder.Append(LagToString(currentLag + laggedVarNode.Lag));
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[7038] | 179 |
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| 180 | } else if (node.Symbol is Variable) {
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[4327] | 181 | var varNode = node as VariableTreeNode;
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[7038] | 182 | if (!varNode.Weight.IsAlmost((1.0))) {
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| 183 | strBuilder.Append("c_{" + constants.Count + "} \\cdot ");
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| 184 | constants.Add(varNode.Weight);
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| 185 | }
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| 186 | strBuilder.Append(EscapeLatexString(varNode.VariableName));
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[5428] | 187 | strBuilder.Append(LagToString(currentLag));
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[4327] | 188 | } else if (node.Symbol is ProgramRootSymbol) {
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[7446] | 189 | strBuilder
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| 190 | .AppendLine("\\begin{align*}")
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| 191 | .AppendLine("\\nonumber");
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[4327] | 192 | } else if (node.Symbol is Defun) {
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| 193 | var defunNode = node as DefunTreeNode;
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[4969] | 194 | strBuilder.Append(defunNode.FunctionName + " & = ");
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[4327] | 195 | } else if (node.Symbol is InvokeFunction) {
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| 196 | var invokeNode = node as InvokeFunctionTreeNode;
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[7446] | 197 | strBuilder.Append(invokeNode.Symbol.FunctionName + @" \left( ");
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[4327] | 198 | } else if (node.Symbol is StartSymbol) {
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[8798] | 199 | strBuilder.Append("target_" + (targetCount++) + "(t) & = ");
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[4900] | 200 | } else if (node.Symbol is Argument) {
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[4327] | 201 | var argSym = node.Symbol as Argument;
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[4900] | 202 | strBuilder.Append(" ARG+" + argSym.ArgumentIndex + " ");
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[5428] | 203 | } else if (node.Symbol is Derivative) {
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[7446] | 204 | strBuilder.Append(@" \cfrac{d \left( ");
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[5428] | 205 | } else if (node.Symbol is TimeLag) {
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| 206 | var laggedNode = node as ILaggedTreeNode;
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| 207 | currentLag += laggedNode.Lag;
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| 208 | } else if (node.Symbol is Power) {
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[7446] | 209 | strBuilder.Append(@" \left( ");
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[5428] | 210 | } else if (node.Symbol is Root) {
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[7446] | 211 | strBuilder.Append(@" \left( ");
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[5428] | 212 | } else if (node.Symbol is Integral) {
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| 213 | // actually a new variable for t is needed in all subtrees (TODO)
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| 214 | var laggedTreeNode = node as ILaggedTreeNode;
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[7446] | 215 | strBuilder.Append(@"\sum_{t=" + (laggedTreeNode.Lag + currentLag) + @"}^0 \left( ");
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[5468] | 216 | } else if (node.Symbol is VariableCondition) {
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| 217 | var conditionTreeNode = node as VariableConditionTreeNode;
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[7038] | 218 | string p = @"1 / 1 + \exp - c_{" + constants.Count + "} ";
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[5468] | 219 | constants.Add(conditionTreeNode.Slope);
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[7038] | 220 | p += @" \cdot " + EscapeLatexString(conditionTreeNode.VariableName) + LagToString(currentLag) + " - c_{" + constants.Count + @"} ";
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[5468] | 221 | constants.Add(conditionTreeNode.Threshold);
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[7446] | 222 | strBuilder.Append(@" \left( " + p + @"\cdot ");
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[4327] | 223 | } else {
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| 224 | throw new NotImplementedException("Export of " + node.Symbol + " is not implemented.");
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| 225 | }
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| 226 | }
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| 227 |
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[7140] | 228 | private void FormatSep(ISymbolicExpressionTreeNode node, StringBuilder strBuilder, int step) {
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[4327] | 229 | if (node.Symbol is Addition) {
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| 230 | strBuilder.Append(" + ");
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| 231 | } else if (node.Symbol is Subtraction) {
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| 232 | strBuilder.Append(" - ");
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| 233 | } else if (node.Symbol is Multiplication) {
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[5428] | 234 | strBuilder.Append(@" \cdot ");
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[4327] | 235 | } else if (node.Symbol is Division) {
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[7140] | 236 | if (step + 1 == node.SubtreeCount)
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| 237 | strBuilder.Append(@"}{");
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| 238 | else
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| 239 | strBuilder.Append(@" }{ \cfrac{ ");
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[4969] | 240 | } else if (node.Symbol is Average) {
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| 241 | strBuilder.Append(@" + ");
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| 242 | } else if (node.Symbol is Logarithm) {
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| 243 | throw new InvalidOperationException();
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| 244 | } else if (node.Symbol is Exponential) {
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| 245 | throw new InvalidOperationException();
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[7695] | 246 | } else if (node.Symbol is Square) {
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| 247 | throw new InvalidOperationException();
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| 248 | } else if (node.Symbol is SquareRoot) {
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| 249 | throw new InvalidOperationException();
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[4969] | 250 | } else if (node.Symbol is Sine) {
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| 251 | throw new InvalidOperationException();
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| 252 | } else if (node.Symbol is Cosine) {
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| 253 | throw new InvalidOperationException();
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| 254 | } else if (node.Symbol is Tangent) {
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| 255 | throw new InvalidOperationException();
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[7696] | 256 | } else if (node.Symbol is AiryA) {
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| 257 | throw new InvalidOperationException();
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| 258 | } else if (node.Symbol is AiryB) {
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| 259 | throw new InvalidOperationException();
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| 260 | } else if (node.Symbol is Bessel) {
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| 261 | throw new InvalidOperationException();
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| 262 | } else if (node.Symbol is CosineIntegral) {
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| 263 | throw new InvalidOperationException();
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| 264 | } else if (node.Symbol is Dawson) {
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| 265 | throw new InvalidOperationException();
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| 266 | } else if (node.Symbol is Erf) {
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| 267 | throw new InvalidOperationException();
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| 268 | } else if (node.Symbol is ExponentialIntegralEi) {
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| 269 | throw new InvalidOperationException();
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| 270 | } else if (node.Symbol is FresnelCosineIntegral) {
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| 271 | throw new InvalidOperationException();
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| 272 | } else if (node.Symbol is FresnelSineIntegral) {
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| 273 | throw new InvalidOperationException();
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| 274 | } else if (node.Symbol is Gamma) {
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| 275 | throw new InvalidOperationException();
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| 276 | } else if (node.Symbol is HyperbolicCosineIntegral) {
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| 277 | throw new InvalidOperationException();
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| 278 | } else if (node.Symbol is HyperbolicSineIntegral) {
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| 279 | throw new InvalidOperationException();
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[7697] | 280 | } else if (node.Symbol is Norm) {
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| 281 | throw new InvalidOperationException();
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[7696] | 282 | } else if (node.Symbol is Psi) {
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| 283 | throw new InvalidOperationException();
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| 284 | } else if (node.Symbol is SineIntegral) {
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| 285 | throw new InvalidOperationException();
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[4969] | 286 | } else if (node.Symbol is GreaterThan) {
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| 287 | strBuilder.Append(@" > ");
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| 288 | } else if (node.Symbol is LessThan) {
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| 289 | strBuilder.Append(@" < ");
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| 290 | } else if (node.Symbol is And) {
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[7446] | 291 | strBuilder.Append(@" > 0 \right) \land \left(");
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[4969] | 292 | } else if (node.Symbol is Or) {
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[7446] | 293 | strBuilder.Append(@" > 0 \right) \lor \left(");
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[4969] | 294 | } else if (node.Symbol is Not) {
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| 295 | throw new InvalidOperationException();
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| 296 | } else if (node.Symbol is IfThenElse) {
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[7446] | 297 | strBuilder.Append(@" , ");
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[4327] | 298 | } else if (node.Symbol is ProgramRootSymbol) {
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| 299 | strBuilder.Append(@"\\" + Environment.NewLine);
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| 300 | } else if (node.Symbol is Defun) {
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| 301 | } else if (node.Symbol is InvokeFunction) {
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| 302 | strBuilder.Append(" , ");
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| 303 | } else if (node.Symbol is StartSymbol) {
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[8798] | 304 | strBuilder.Append(@"\\" + Environment.NewLine);
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| 305 | strBuilder.Append("target_" + (targetCount++) + "(t) & = ");
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[5428] | 306 | } else if (node.Symbol is Power) {
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[7446] | 307 | strBuilder.Append(@"\right) ^ { \operatorname{round} \left(");
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[5428] | 308 | } else if (node.Symbol is Root) {
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[7446] | 309 | strBuilder.Append(@"\right) ^ { \cfrac{1}{ \operatorname{round} \left(");
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[5468] | 310 | } else if (node.Symbol is VariableCondition) {
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| 311 | var conditionTreeNode = node as VariableConditionTreeNode;
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[7446] | 312 | string p = @"1 / \left( 1 + \exp \left( - c_{" + constants.Count + "} ";
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[5468] | 313 | constants.Add(conditionTreeNode.Slope);
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[7446] | 314 | p += @" \cdot " + EscapeLatexString(conditionTreeNode.VariableName) + LagToString(currentLag) + " - c_{" + constants.Count + @"} \right) \right) \right) ";
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[5468] | 315 | constants.Add(conditionTreeNode.Threshold);
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[7446] | 316 | strBuilder.Append(@" + \left( 1 - " + p + @" \right) \cdot ");
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[4327] | 317 | } else {
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| 318 | throw new NotImplementedException("Export of " + node.Symbol + " is not implemented.");
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| 319 | }
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| 320 | }
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| 321 |
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[5745] | 322 | private void FormatEnd(ISymbolicExpressionTreeNode node, StringBuilder strBuilder) {
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[4327] | 323 | if (node.Symbol is Addition) {
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[7446] | 324 | strBuilder.Append(@" \right) ");
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[4327] | 325 | } else if (node.Symbol is Subtraction) {
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[7446] | 326 | strBuilder.Append(@" \right) ");
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[4327] | 327 | } else if (node.Symbol is Multiplication) {
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| 328 | } else if (node.Symbol is Division) {
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[7140] | 329 | strBuilder.Append(" } ");
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| 330 | for (int i = 2; i < node.SubtreeCount; i++)
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[5428] | 331 | strBuilder.Append(" } ");
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[4969] | 332 | } else if (node.Symbol is Average) {
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[7446] | 333 | strBuilder.Append(@" \right) ");
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[4969] | 334 | } else if (node.Symbol is Logarithm) {
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[7446] | 335 | strBuilder.Append(@" \right) ");
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[4969] | 336 | } else if (node.Symbol is Exponential) {
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[7446] | 337 | strBuilder.Append(@" \right) ");
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[7695] | 338 | } else if (node.Symbol is Square) {
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| 339 | strBuilder.Append(@"\right)^2");
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| 340 | } else if (node.Symbol is SquareRoot) {
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| 341 | strBuilder.Append(@"}");
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[4969] | 342 | } else if (node.Symbol is Sine) {
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[7446] | 343 | strBuilder.Append(@" \right) ");
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[4969] | 344 | } else if (node.Symbol is Cosine) {
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[7446] | 345 | strBuilder.Append(@" \right) ");
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[4969] | 346 | } else if (node.Symbol is Tangent) {
|
---|
[7446] | 347 | strBuilder.Append(@" \right) ");
|
---|
[7696] | 348 | } else if (node.Symbol is AiryA) {
|
---|
| 349 | strBuilder.Append(@" \right) ");
|
---|
| 350 | } else if (node.Symbol is AiryB) {
|
---|
| 351 | strBuilder.Append(@" \right) ");
|
---|
| 352 | } else if (node.Symbol is Bessel) {
|
---|
| 353 | strBuilder.Append(@" \right) ");
|
---|
| 354 | } else if (node.Symbol is CosineIntegral) {
|
---|
| 355 | strBuilder.Append(@" \right) ");
|
---|
| 356 | } else if (node.Symbol is Dawson) {
|
---|
| 357 | strBuilder.Append(@" \right) ");
|
---|
| 358 | } else if (node.Symbol is Erf) {
|
---|
| 359 | strBuilder.Append(@" \right) ");
|
---|
| 360 | } else if (node.Symbol is ExponentialIntegralEi) {
|
---|
| 361 | strBuilder.Append(@" \right) ");
|
---|
| 362 | } else if (node.Symbol is FresnelCosineIntegral) {
|
---|
| 363 | strBuilder.Append(@" \right) ");
|
---|
| 364 | } else if (node.Symbol is FresnelSineIntegral) {
|
---|
| 365 | strBuilder.Append(@" \right) ");
|
---|
| 366 | } else if (node.Symbol is Gamma) {
|
---|
| 367 | strBuilder.Append(@" \right) ");
|
---|
| 368 | } else if (node.Symbol is HyperbolicCosineIntegral) {
|
---|
| 369 | strBuilder.Append(@" \right) ");
|
---|
| 370 | } else if (node.Symbol is HyperbolicSineIntegral) {
|
---|
| 371 | strBuilder.Append(@" \right) ");
|
---|
[7697] | 372 | } else if (node.Symbol is Norm) {
|
---|
| 373 | strBuilder.Append(@" \right) ");
|
---|
[7696] | 374 | } else if (node.Symbol is Psi) {
|
---|
| 375 | strBuilder.Append(@" \right) ");
|
---|
| 376 | } else if (node.Symbol is SineIntegral) {
|
---|
| 377 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 378 | } else if (node.Symbol is GreaterThan) {
|
---|
[7446] | 379 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 380 | } else if (node.Symbol is LessThan) {
|
---|
[7446] | 381 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 382 | } else if (node.Symbol is And) {
|
---|
[7446] | 383 | strBuilder.Append(@" > 0 \right) \right) ");
|
---|
[4969] | 384 | } else if (node.Symbol is Or) {
|
---|
[7446] | 385 | strBuilder.Append(@" > 0 \right) \right) ");
|
---|
[4969] | 386 | } else if (node.Symbol is Not) {
|
---|
[7446] | 387 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 388 | } else if (node.Symbol is IfThenElse) {
|
---|
[7446] | 389 | strBuilder.Append(@" \right) ");
|
---|
[4327] | 390 | } else if (node.Symbol is Constant) {
|
---|
[5428] | 391 | } else if (node.Symbol is LaggedVariable) {
|
---|
[7038] | 392 | } else if (node.Symbol is Variable) {
|
---|
[4327] | 393 | } else if (node.Symbol is ProgramRootSymbol) {
|
---|
[7446] | 394 | strBuilder
|
---|
| 395 | .AppendLine("\\end{align*}")
|
---|
| 396 | .AppendLine("\\begin{align*}")
|
---|
| 397 | .AppendLine("\\nonumber");
|
---|
[4969] | 398 | // output all constant values
|
---|
| 399 | if (constants.Count > 0) {
|
---|
| 400 | int i = 0;
|
---|
| 401 | foreach (var constant in constants) {
|
---|
[7446] | 402 | // replace "." with ".&" to align decimal points
|
---|
| 403 | var constStr = string.Format(System.Globalization.NumberFormatInfo.InvariantInfo, "{0:G5}", constant);
|
---|
[7451] | 404 | if (!constStr.Contains(".")) constStr = constStr + ".0";
|
---|
[14029] | 405 | constStr = constStr.Replace(".", "&."); // fix problem in rendering of aligned expressions
|
---|
[7446] | 406 | strBuilder.Append("c_{" + i + "}& = & " + constStr);
|
---|
| 407 | strBuilder.Append(@"\\");
|
---|
[4969] | 408 | i++;
|
---|
| 409 | }
|
---|
| 410 | }
|
---|
[7446] | 411 | strBuilder.AppendLine("\\end{align*}");
|
---|
[4327] | 412 | } else if (node.Symbol is Defun) {
|
---|
| 413 | } else if (node.Symbol is InvokeFunction) {
|
---|
[7446] | 414 | strBuilder.Append(@" \right) ");
|
---|
[4327] | 415 | } else if (node.Symbol is StartSymbol) {
|
---|
| 416 | } else if (node.Symbol is Argument) {
|
---|
[5428] | 417 | } else if (node.Symbol is Derivative) {
|
---|
[7446] | 418 | strBuilder.Append(@" \right) }{dt} ");
|
---|
[5428] | 419 | } else if (node.Symbol is TimeLag) {
|
---|
| 420 | var laggedNode = node as ILaggedTreeNode;
|
---|
| 421 | currentLag -= laggedNode.Lag;
|
---|
| 422 | } else if (node.Symbol is Power) {
|
---|
[7446] | 423 | strBuilder.Append(@" \right) } ");
|
---|
[5428] | 424 | } else if (node.Symbol is Root) {
|
---|
[7446] | 425 | strBuilder.Append(@" \right) } } ");
|
---|
[5428] | 426 | } else if (node.Symbol is Integral) {
|
---|
[7446] | 427 | strBuilder.Append(@" \right) ");
|
---|
[5468] | 428 | } else if (node.Symbol is VariableCondition) {
|
---|
[7446] | 429 | strBuilder.Append(@"\right) ");
|
---|
[4327] | 430 | } else {
|
---|
| 431 | throw new NotImplementedException("Export of " + node.Symbol + " is not implemented.");
|
---|
| 432 | }
|
---|
| 433 | }
|
---|
[6975] | 434 |
|
---|
[5428] | 435 | private string LagToString(int lag) {
|
---|
| 436 | if (lag < 0) {
|
---|
| 437 | return "(t" + lag + ")";
|
---|
| 438 | } else if (lag > 0) {
|
---|
| 439 | return "(t+" + lag + ")";
|
---|
[7038] | 440 | } else return "";
|
---|
[5428] | 441 | }
|
---|
[6975] | 442 |
|
---|
| 443 | private string EscapeLatexString(string s) {
|
---|
[7446] | 444 | return "\\text{" +
|
---|
| 445 | s
|
---|
| 446 | .Replace("\\", "\\\\")
|
---|
| 447 | .Replace("{", "\\{")
|
---|
| 448 | .Replace("}", "\\}")
|
---|
| 449 | + "}";
|
---|
[6975] | 450 | }
|
---|
[4327] | 451 | }
|
---|
| 452 | }
|
---|