[4327] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7259] | 3 | * Copyright (C) 2002-2012 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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[4969] | 35 | private List<double> constants;
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[5428] | 36 | private int currentLag;
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[4969] | 37 |
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[5429] | 38 | [StorableConstructor]
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[5745] | 39 | private SymbolicDataAnalysisExpressionLatexFormatter(bool deserializing) : base(deserializing) { }
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| 40 | private SymbolicDataAnalysisExpressionLatexFormatter(SymbolicDataAnalysisExpressionLatexFormatter original, Cloner cloner)
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[5429] | 41 | : base(original, cloner) {
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| 42 | constants = new List<double>(original.constants);
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| 43 | }
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[5745] | 44 | public SymbolicDataAnalysisExpressionLatexFormatter()
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| 45 | : base() {
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| 46 | Name = ItemName;
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| 47 | Description = ItemDescription;
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[4969] | 48 | constants = new List<double>();
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| 49 | }
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[4327] | 50 |
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[4900] | 51 | public override IDeepCloneable Clone(Cloner cloner) {
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[5745] | 52 | return new SymbolicDataAnalysisExpressionLatexFormatter(this, cloner);
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[4900] | 53 | }
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| 54 |
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[5745] | 55 | public string Format(ISymbolicExpressionTree symbolicExpressionTree) {
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[4327] | 56 | try {
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| 57 | StringBuilder strBuilder = new StringBuilder();
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[4969] | 58 | constants.Clear();
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[4327] | 59 | strBuilder.AppendLine(FormatRecursively(symbolicExpressionTree.Root));
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| 60 | return strBuilder.ToString();
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| 61 | }
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| 62 | catch (NotImplementedException ex) {
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| 63 | return ex.Message + Environment.NewLine + ex.StackTrace;
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| 64 | }
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| 65 | }
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| 66 |
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[5745] | 67 | private string FormatRecursively(ISymbolicExpressionTreeNode node) {
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[4327] | 68 | StringBuilder strBuilder = new StringBuilder();
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[5428] | 69 | currentLag = 0;
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[4327] | 70 | FormatBegin(node, strBuilder);
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| 71 |
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[6803] | 72 | if (node.SubtreeCount > 0) {
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[5745] | 73 | strBuilder.Append(FormatRecursively(node.GetSubtree(0)));
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[4327] | 74 | }
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[7140] | 75 | int i = 1;
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[5745] | 76 | foreach (SymbolicExpressionTreeNode subTree in node.Subtrees.Skip(1)) {
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[7140] | 77 | FormatSep(node, strBuilder, i);
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[4327] | 78 | // format the whole subtree
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| 79 | strBuilder.Append(FormatRecursively(subTree));
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[7140] | 80 | i++;
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[4327] | 81 | }
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| 82 |
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| 83 | FormatEnd(node, strBuilder);
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| 84 |
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| 85 | return strBuilder.ToString();
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| 86 | }
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| 87 |
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[5745] | 88 | private void FormatBegin(ISymbolicExpressionTreeNode node, StringBuilder strBuilder) {
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[4327] | 89 | if (node.Symbol is Addition) {
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[7446] | 90 | strBuilder.Append(@" \left( ");
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[4327] | 91 | } else if (node.Symbol is Subtraction) {
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[6803] | 92 | if (node.SubtreeCount == 1) {
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[7446] | 93 | strBuilder.Append(@"- \left( ");
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[5428] | 94 | } else {
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[7446] | 95 | strBuilder.Append(@" \left( ");
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[5428] | 96 | }
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[4327] | 97 | } else if (node.Symbol is Multiplication) {
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| 98 | } else if (node.Symbol is Division) {
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[6803] | 99 | if (node.SubtreeCount == 1) {
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[5428] | 100 | strBuilder.Append(@" \cfrac{1}{");
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| 101 | } else {
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| 102 | strBuilder.Append(@" \cfrac{ ");
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| 103 | }
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[4969] | 104 | } else if (node.Symbol is Average) {
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[5428] | 105 | // skip output of (1/1) if only one subtree
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[6803] | 106 | if (node.SubtreeCount > 1) {
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| 107 | strBuilder.Append(@" \cfrac{1}{" + node.SubtreeCount + @"}");
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[5428] | 108 | }
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[7446] | 109 | strBuilder.Append(@" \left( ");
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[4969] | 110 | } else if (node.Symbol is Logarithm) {
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[7446] | 111 | strBuilder.Append(@"\log \left( ");
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[4969] | 112 | } else if (node.Symbol is Exponential) {
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[7446] | 113 | strBuilder.Append(@"\exp \left( ");
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[7695] | 114 | } else if (node.Symbol is Square) {
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| 115 | strBuilder.Append(@"\left(");
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| 116 | } else if (node.Symbol is SquareRoot) {
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| 117 | strBuilder.Append(@"\sqrt{");
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[4969] | 118 | } else if (node.Symbol is Sine) {
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[7446] | 119 | strBuilder.Append(@"\sin \left( ");
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[4969] | 120 | } else if (node.Symbol is Cosine) {
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[7446] | 121 | strBuilder.Append(@"\cos \left( ");
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[4969] | 122 | } else if (node.Symbol is Tangent) {
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[7446] | 123 | strBuilder.Append(@"\tan \left( ");
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[7696] | 124 | } else if (node.Symbol is AiryA) {
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| 125 | strBuilder.Append(@"\operatorname{airy}_a \left( ");
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| 126 | } else if (node.Symbol is AiryB) {
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| 127 | strBuilder.Append(@"\operatorname{airy}_b \left( ");
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| 128 | } else if (node.Symbol is Bessel) {
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| 129 | strBuilder.Append(@"\operatorname{bessel}_1 \left( ");
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| 130 | } else if (node.Symbol is CosineIntegral) {
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| 131 | strBuilder.Append(@"\operatorname{cosInt} \left( ");
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| 132 | } else if (node.Symbol is Dawson) {
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| 133 | strBuilder.Append(@"\operatorname{dawson} \left( ");
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| 134 | } else if (node.Symbol is Erf) {
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| 135 | strBuilder.Append(@"\operatorname{erf} \left( ");
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| 136 | } else if (node.Symbol is ExponentialIntegralEi) {
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| 137 | strBuilder.Append(@"\operatorname{expInt}_i \left( ");
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| 138 | } else if (node.Symbol is FresnelCosineIntegral) {
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[7708] | 139 | strBuilder.Append(@"\operatorname{fresnel}_\operatorname{cosInt} \left( ");
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[7696] | 140 | } else if (node.Symbol is FresnelSineIntegral) {
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[7708] | 141 | strBuilder.Append(@"\operatorname{fresnel}_\operatorname{sinInt} \left( ");
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[7696] | 142 | } else if (node.Symbol is Gamma) {
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| 143 | strBuilder.Append(@"\Gamma \left( ");
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| 144 | } else if (node.Symbol is HyperbolicCosineIntegral) {
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| 145 | strBuilder.Append(@"\operatorname{hypCosInt} \left( ");
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| 146 | } else if (node.Symbol is HyperbolicSineIntegral) {
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| 147 | strBuilder.Append(@"\operatorname{hypSinInt} \left( ");
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[7697] | 148 | } else if (node.Symbol is Norm) {
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| 149 | strBuilder.Append(@"\operatorname{norm} \left( ");
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[7696] | 150 | } else if (node.Symbol is Psi) {
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| 151 | strBuilder.Append(@"\operatorname{digamma} \left( ");
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| 152 | } else if (node.Symbol is SineIntegral) {
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| 153 | strBuilder.Append(@"\operatorname{sinInt} \left( ");
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[4969] | 154 | } else if (node.Symbol is GreaterThan) {
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[7446] | 155 | strBuilder.Append(@" \left( ");
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[4969] | 156 | } else if (node.Symbol is LessThan) {
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[7446] | 157 | strBuilder.Append(@" \left( ");
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[4969] | 158 | } else if (node.Symbol is And) {
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[7451] | 159 | strBuilder.Append(@" \left( \left( ");
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[4969] | 160 | } else if (node.Symbol is Or) {
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[7451] | 161 | strBuilder.Append(@" \left( \left( ");
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[4969] | 162 | } else if (node.Symbol is Not) {
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[7446] | 163 | strBuilder.Append(@" \neg \left( ");
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[4969] | 164 | } else if (node.Symbol is IfThenElse) {
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[7446] | 165 | strBuilder.Append(@" \operatorname{if} \left( ");
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[4327] | 166 | } else if (node.Symbol is Constant) {
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[5428] | 167 | strBuilder.Append("c_{" + constants.Count + "} ");
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[4969] | 168 | var constNode = node as ConstantTreeNode;
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| 169 | constants.Add(constNode.Value);
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[5428] | 170 | } else if (node.Symbol is LaggedVariable) {
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| 171 | var laggedVarNode = node as LaggedVariableTreeNode;
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[7038] | 172 | if (!laggedVarNode.Weight.IsAlmost(1.0)) {
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| 173 | strBuilder.Append("c_{" + constants.Count + "} \\cdot ");
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| 174 | constants.Add(laggedVarNode.Weight);
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| 175 | }
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| 176 | strBuilder.Append(EscapeLatexString(laggedVarNode.VariableName));
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[5428] | 177 | strBuilder.Append(LagToString(currentLag + laggedVarNode.Lag));
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[7038] | 178 |
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| 179 | } else if (node.Symbol is Variable) {
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[4327] | 180 | var varNode = node as VariableTreeNode;
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[7038] | 181 | if (!varNode.Weight.IsAlmost((1.0))) {
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| 182 | strBuilder.Append("c_{" + constants.Count + "} \\cdot ");
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| 183 | constants.Add(varNode.Weight);
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| 184 | }
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| 185 | strBuilder.Append(EscapeLatexString(varNode.VariableName));
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[5428] | 186 | strBuilder.Append(LagToString(currentLag));
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[4327] | 187 | } else if (node.Symbol is ProgramRootSymbol) {
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[7446] | 188 | strBuilder
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| 189 | .AppendLine("\\begin{align*}")
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| 190 | .AppendLine("\\nonumber");
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[4327] | 191 | } else if (node.Symbol is Defun) {
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| 192 | var defunNode = node as DefunTreeNode;
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[4969] | 193 | strBuilder.Append(defunNode.FunctionName + " & = ");
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[4327] | 194 | } else if (node.Symbol is InvokeFunction) {
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| 195 | var invokeNode = node as InvokeFunctionTreeNode;
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[7446] | 196 | strBuilder.Append(invokeNode.Symbol.FunctionName + @" \left( ");
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[4327] | 197 | } else if (node.Symbol is StartSymbol) {
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[4969] | 198 | strBuilder.Append("Result & = ");
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[4900] | 199 | } else if (node.Symbol is Argument) {
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[4327] | 200 | var argSym = node.Symbol as Argument;
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[4900] | 201 | strBuilder.Append(" ARG+" + argSym.ArgumentIndex + " ");
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[5428] | 202 | } else if (node.Symbol is Derivative) {
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[7446] | 203 | strBuilder.Append(@" \cfrac{d \left( ");
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[5428] | 204 | } else if (node.Symbol is TimeLag) {
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| 205 | var laggedNode = node as ILaggedTreeNode;
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| 206 | currentLag += laggedNode.Lag;
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| 207 | } else if (node.Symbol is Power) {
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[7446] | 208 | strBuilder.Append(@" \left( ");
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[5428] | 209 | } else if (node.Symbol is Root) {
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[7446] | 210 | strBuilder.Append(@" \left( ");
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[5428] | 211 | } else if (node.Symbol is Integral) {
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| 212 | // actually a new variable for t is needed in all subtrees (TODO)
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| 213 | var laggedTreeNode = node as ILaggedTreeNode;
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[7446] | 214 | strBuilder.Append(@"\sum_{t=" + (laggedTreeNode.Lag + currentLag) + @"}^0 \left( ");
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[5468] | 215 | } else if (node.Symbol is VariableCondition) {
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| 216 | var conditionTreeNode = node as VariableConditionTreeNode;
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[7038] | 217 | string p = @"1 / 1 + \exp - c_{" + constants.Count + "} ";
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[5468] | 218 | constants.Add(conditionTreeNode.Slope);
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[7038] | 219 | p += @" \cdot " + EscapeLatexString(conditionTreeNode.VariableName) + LagToString(currentLag) + " - c_{" + constants.Count + @"} ";
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[5468] | 220 | constants.Add(conditionTreeNode.Threshold);
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[7446] | 221 | strBuilder.Append(@" \left( " + p + @"\cdot ");
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[4327] | 222 | } else {
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| 223 | throw new NotImplementedException("Export of " + node.Symbol + " is not implemented.");
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| 224 | }
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| 225 | }
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| 226 |
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[7140] | 227 | private void FormatSep(ISymbolicExpressionTreeNode node, StringBuilder strBuilder, int step) {
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[4327] | 228 | if (node.Symbol is Addition) {
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| 229 | strBuilder.Append(" + ");
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| 230 | } else if (node.Symbol is Subtraction) {
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| 231 | strBuilder.Append(" - ");
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| 232 | } else if (node.Symbol is Multiplication) {
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[5428] | 233 | strBuilder.Append(@" \cdot ");
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[4327] | 234 | } else if (node.Symbol is Division) {
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[7140] | 235 | if (step + 1 == node.SubtreeCount)
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| 236 | strBuilder.Append(@"}{");
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| 237 | else
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| 238 | strBuilder.Append(@" }{ \cfrac{ ");
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[4969] | 239 | } else if (node.Symbol is Average) {
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| 240 | strBuilder.Append(@" + ");
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| 241 | } else if (node.Symbol is Logarithm) {
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| 242 | throw new InvalidOperationException();
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| 243 | } else if (node.Symbol is Exponential) {
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| 244 | throw new InvalidOperationException();
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[7695] | 245 | } else if (node.Symbol is Square) {
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| 246 | throw new InvalidOperationException();
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| 247 | } else if (node.Symbol is SquareRoot) {
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| 248 | throw new InvalidOperationException();
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[4969] | 249 | } else if (node.Symbol is Sine) {
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| 250 | throw new InvalidOperationException();
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| 251 | } else if (node.Symbol is Cosine) {
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| 252 | throw new InvalidOperationException();
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| 253 | } else if (node.Symbol is Tangent) {
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| 254 | throw new InvalidOperationException();
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[7696] | 255 | } else if (node.Symbol is AiryA) {
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| 256 | throw new InvalidOperationException();
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| 257 | } else if (node.Symbol is AiryB) {
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| 258 | throw new InvalidOperationException();
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| 259 | } else if (node.Symbol is Bessel) {
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| 260 | throw new InvalidOperationException();
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| 261 | } else if (node.Symbol is CosineIntegral) {
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| 262 | throw new InvalidOperationException();
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| 263 | } else if (node.Symbol is Dawson) {
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| 264 | throw new InvalidOperationException();
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| 265 | } else if (node.Symbol is Erf) {
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| 266 | throw new InvalidOperationException();
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| 267 | } else if (node.Symbol is ExponentialIntegralEi) {
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| 268 | throw new InvalidOperationException();
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| 269 | } else if (node.Symbol is FresnelCosineIntegral) {
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| 270 | throw new InvalidOperationException();
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| 271 | } else if (node.Symbol is FresnelSineIntegral) {
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| 272 | throw new InvalidOperationException();
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| 273 | } else if (node.Symbol is Gamma) {
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| 274 | throw new InvalidOperationException();
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| 275 | } else if (node.Symbol is HyperbolicCosineIntegral) {
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| 276 | throw new InvalidOperationException();
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| 277 | } else if (node.Symbol is HyperbolicSineIntegral) {
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| 278 | throw new InvalidOperationException();
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[7697] | 279 | } else if (node.Symbol is Norm) {
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| 280 | throw new InvalidOperationException();
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[7696] | 281 | } else if (node.Symbol is Psi) {
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| 282 | throw new InvalidOperationException();
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| 283 | } else if (node.Symbol is SineIntegral) {
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| 284 | throw new InvalidOperationException();
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[4969] | 285 | } else if (node.Symbol is GreaterThan) {
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| 286 | strBuilder.Append(@" > ");
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| 287 | } else if (node.Symbol is LessThan) {
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| 288 | strBuilder.Append(@" < ");
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| 289 | } else if (node.Symbol is And) {
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[7446] | 290 | strBuilder.Append(@" > 0 \right) \land \left(");
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[4969] | 291 | } else if (node.Symbol is Or) {
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[7446] | 292 | strBuilder.Append(@" > 0 \right) \lor \left(");
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[4969] | 293 | } else if (node.Symbol is Not) {
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| 294 | throw new InvalidOperationException();
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| 295 | } else if (node.Symbol is IfThenElse) {
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[7446] | 296 | strBuilder.Append(@" , ");
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[4327] | 297 | } else if (node.Symbol is ProgramRootSymbol) {
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| 298 | strBuilder.Append(@"\\" + Environment.NewLine);
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| 299 | } else if (node.Symbol is Defun) {
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| 300 | } else if (node.Symbol is InvokeFunction) {
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| 301 | strBuilder.Append(" , ");
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| 302 | } else if (node.Symbol is StartSymbol) {
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[4969] | 303 | strBuilder.Append(@"\\" + Environment.NewLine + " & ");
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[5428] | 304 | } else if (node.Symbol is Power) {
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[7446] | 305 | strBuilder.Append(@"\right) ^ { \operatorname{round} \left(");
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[5428] | 306 | } else if (node.Symbol is Root) {
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[7446] | 307 | strBuilder.Append(@"\right) ^ { \cfrac{1}{ \operatorname{round} \left(");
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[5468] | 308 | } else if (node.Symbol is VariableCondition) {
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| 309 | var conditionTreeNode = node as VariableConditionTreeNode;
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[7446] | 310 | string p = @"1 / \left( 1 + \exp \left( - c_{" + constants.Count + "} ";
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[5468] | 311 | constants.Add(conditionTreeNode.Slope);
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[7446] | 312 | p += @" \cdot " + EscapeLatexString(conditionTreeNode.VariableName) + LagToString(currentLag) + " - c_{" + constants.Count + @"} \right) \right) \right) ";
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[5468] | 313 | constants.Add(conditionTreeNode.Threshold);
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[7446] | 314 | strBuilder.Append(@" + \left( 1 - " + p + @" \right) \cdot ");
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[4327] | 315 | } else {
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| 316 | throw new NotImplementedException("Export of " + node.Symbol + " is not implemented.");
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| 317 | }
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| 318 | }
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| 319 |
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[5745] | 320 | private void FormatEnd(ISymbolicExpressionTreeNode node, StringBuilder strBuilder) {
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[4327] | 321 | if (node.Symbol is Addition) {
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[7446] | 322 | strBuilder.Append(@" \right) ");
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[4327] | 323 | } else if (node.Symbol is Subtraction) {
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[7446] | 324 | strBuilder.Append(@" \right) ");
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[4327] | 325 | } else if (node.Symbol is Multiplication) {
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| 326 | } else if (node.Symbol is Division) {
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[7140] | 327 | strBuilder.Append(" } ");
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| 328 | for (int i = 2; i < node.SubtreeCount; i++)
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[5428] | 329 | strBuilder.Append(" } ");
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[4969] | 330 | } else if (node.Symbol is Average) {
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[7446] | 331 | strBuilder.Append(@" \right) ");
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[4969] | 332 | } else if (node.Symbol is Logarithm) {
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[7446] | 333 | strBuilder.Append(@" \right) ");
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[4969] | 334 | } else if (node.Symbol is Exponential) {
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[7446] | 335 | strBuilder.Append(@" \right) ");
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[7695] | 336 | } else if (node.Symbol is Square) {
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| 337 | strBuilder.Append(@"\right)^2");
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| 338 | } else if (node.Symbol is SquareRoot) {
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| 339 | strBuilder.Append(@"}");
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[4969] | 340 | } else if (node.Symbol is Sine) {
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[7446] | 341 | strBuilder.Append(@" \right) ");
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[4969] | 342 | } else if (node.Symbol is Cosine) {
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[7446] | 343 | strBuilder.Append(@" \right) ");
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[4969] | 344 | } else if (node.Symbol is Tangent) {
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[7446] | 345 | strBuilder.Append(@" \right) ");
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[7696] | 346 | } else if (node.Symbol is AiryA) {
|
---|
| 347 | strBuilder.Append(@" \right) ");
|
---|
| 348 | } else if (node.Symbol is AiryB) {
|
---|
| 349 | strBuilder.Append(@" \right) ");
|
---|
| 350 | } else if (node.Symbol is Bessel) {
|
---|
| 351 | strBuilder.Append(@" \right) ");
|
---|
| 352 | } else if (node.Symbol is CosineIntegral) {
|
---|
| 353 | strBuilder.Append(@" \right) ");
|
---|
| 354 | } else if (node.Symbol is Dawson) {
|
---|
| 355 | strBuilder.Append(@" \right) ");
|
---|
| 356 | } else if (node.Symbol is Erf) {
|
---|
| 357 | strBuilder.Append(@" \right) ");
|
---|
| 358 | } else if (node.Symbol is ExponentialIntegralEi) {
|
---|
| 359 | strBuilder.Append(@" \right) ");
|
---|
| 360 | } else if (node.Symbol is FresnelCosineIntegral) {
|
---|
| 361 | strBuilder.Append(@" \right) ");
|
---|
| 362 | } else if (node.Symbol is FresnelSineIntegral) {
|
---|
| 363 | strBuilder.Append(@" \right) ");
|
---|
| 364 | } else if (node.Symbol is Gamma) {
|
---|
| 365 | strBuilder.Append(@" \right) ");
|
---|
| 366 | } else if (node.Symbol is HyperbolicCosineIntegral) {
|
---|
| 367 | strBuilder.Append(@" \right) ");
|
---|
| 368 | } else if (node.Symbol is HyperbolicSineIntegral) {
|
---|
| 369 | strBuilder.Append(@" \right) ");
|
---|
[7697] | 370 | } else if (node.Symbol is Norm) {
|
---|
| 371 | strBuilder.Append(@" \right) ");
|
---|
[7696] | 372 | } else if (node.Symbol is Psi) {
|
---|
| 373 | strBuilder.Append(@" \right) ");
|
---|
| 374 | } else if (node.Symbol is SineIntegral) {
|
---|
| 375 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 376 | } else if (node.Symbol is GreaterThan) {
|
---|
[7446] | 377 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 378 | } else if (node.Symbol is LessThan) {
|
---|
[7446] | 379 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 380 | } else if (node.Symbol is And) {
|
---|
[7446] | 381 | strBuilder.Append(@" > 0 \right) \right) ");
|
---|
[4969] | 382 | } else if (node.Symbol is Or) {
|
---|
[7446] | 383 | strBuilder.Append(@" > 0 \right) \right) ");
|
---|
[4969] | 384 | } else if (node.Symbol is Not) {
|
---|
[7446] | 385 | strBuilder.Append(@" \right) ");
|
---|
[4969] | 386 | } else if (node.Symbol is IfThenElse) {
|
---|
[7446] | 387 | strBuilder.Append(@" \right) ");
|
---|
[4327] | 388 | } else if (node.Symbol is Constant) {
|
---|
[5428] | 389 | } else if (node.Symbol is LaggedVariable) {
|
---|
[7038] | 390 | } else if (node.Symbol is Variable) {
|
---|
[4327] | 391 | } else if (node.Symbol is ProgramRootSymbol) {
|
---|
[7446] | 392 | strBuilder
|
---|
| 393 | .AppendLine("\\end{align*}")
|
---|
| 394 | .AppendLine("\\begin{align*}")
|
---|
| 395 | .AppendLine("\\nonumber");
|
---|
[4969] | 396 | // output all constant values
|
---|
| 397 | if (constants.Count > 0) {
|
---|
| 398 | int i = 0;
|
---|
| 399 | foreach (var constant in constants) {
|
---|
[7446] | 400 | // replace "." with ".&" to align decimal points
|
---|
| 401 | var constStr = string.Format(System.Globalization.NumberFormatInfo.InvariantInfo, "{0:G5}", constant);
|
---|
[7451] | 402 | if (!constStr.Contains(".")) constStr = constStr + ".0";
|
---|
[7446] | 403 | constStr = constStr.Replace(".", "\\negthickspace&."); // fix problem in rendering of aligned expressions
|
---|
| 404 | strBuilder.Append("c_{" + i + "}& = & " + constStr);
|
---|
| 405 | strBuilder.Append(@"\\");
|
---|
[4969] | 406 | i++;
|
---|
| 407 | }
|
---|
| 408 | }
|
---|
[7446] | 409 | strBuilder.AppendLine("\\end{align*}");
|
---|
[4327] | 410 | } else if (node.Symbol is Defun) {
|
---|
| 411 | } else if (node.Symbol is InvokeFunction) {
|
---|
[7446] | 412 | strBuilder.Append(@" \right) ");
|
---|
[4327] | 413 | } else if (node.Symbol is StartSymbol) {
|
---|
| 414 | } else if (node.Symbol is Argument) {
|
---|
[5428] | 415 | } else if (node.Symbol is Derivative) {
|
---|
[7446] | 416 | strBuilder.Append(@" \right) }{dt} ");
|
---|
[5428] | 417 | } else if (node.Symbol is TimeLag) {
|
---|
| 418 | var laggedNode = node as ILaggedTreeNode;
|
---|
| 419 | currentLag -= laggedNode.Lag;
|
---|
| 420 | } else if (node.Symbol is Power) {
|
---|
[7446] | 421 | strBuilder.Append(@" \right) } ");
|
---|
[5428] | 422 | } else if (node.Symbol is Root) {
|
---|
[7446] | 423 | strBuilder.Append(@" \right) } } ");
|
---|
[5428] | 424 | } else if (node.Symbol is Integral) {
|
---|
[7446] | 425 | strBuilder.Append(@" \right) ");
|
---|
[5468] | 426 | } else if (node.Symbol is VariableCondition) {
|
---|
[7446] | 427 | strBuilder.Append(@"\right) ");
|
---|
[4327] | 428 | } else {
|
---|
| 429 | throw new NotImplementedException("Export of " + node.Symbol + " is not implemented.");
|
---|
| 430 | }
|
---|
| 431 | }
|
---|
[6975] | 432 |
|
---|
[5428] | 433 | private string LagToString(int lag) {
|
---|
| 434 | if (lag < 0) {
|
---|
| 435 | return "(t" + lag + ")";
|
---|
| 436 | } else if (lag > 0) {
|
---|
| 437 | return "(t+" + lag + ")";
|
---|
[7038] | 438 | } else return "";
|
---|
[5428] | 439 | }
|
---|
[6975] | 440 |
|
---|
| 441 | private string EscapeLatexString(string s) {
|
---|
[7446] | 442 | return "\\text{" +
|
---|
| 443 | s
|
---|
| 444 | .Replace("\\", "\\\\")
|
---|
| 445 | .Replace("{", "\\{")
|
---|
| 446 | .Replace("}", "\\}")
|
---|
| 447 | + "}";
|
---|
[6975] | 448 | }
|
---|
[4327] | 449 | }
|
---|
| 450 | }
|
---|