Mercurial > repos > public > sbplib

annotate +grid/Cartesian.m @ 323:7579c2abbf9f feature/beams

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Cleaning d4_variable_8_higher_boundary_order.m
author Jonatan Werpers <jonatan@werpers.com>
date Mon, 26 Sep 2016 09:19:08 +0200
parents 7c1d3fc33f90
children 3da69d57e684
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ce10ebde3123 Added abstract class Structured.
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1 classdef Cartesian < grid.Structured
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2 properties
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3 n % Number of points in the grid
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4 d % Number of dimensions
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5 m % Number of points in each direction
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6 x % Cell array of vectors with node placement for each dimension.
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7 h % Spacing/Scaling
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8 end
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9
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10 % General d dimensional grid with n points
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11 methods
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12 % Creates a cartesian grid given vectors conatining the coordinates
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13 % in each direction
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14 function obj = Cartesian(varargin)
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15 obj.d = length(varargin);
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16
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17 for i = 1:obj.d
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18 obj.x{i} = varargin{i};
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19 obj.m(i) = length(varargin{i});
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20 end
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21
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22 obj.n = prod(obj.m);
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23 if obj.n == 0
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24 error('grid:Cartesian:EmptyGrid','Input parameter gives an empty grid.')
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25 end
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26
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27 obj.h = [];
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28 end
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29 % n returns the number of points in the grid
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30 function o = N(obj)
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31 o = obj.n;
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32 end
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33
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34 % d returns the spatial dimension of the grid
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35 function o = D(obj)
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36 o = obj.d;
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37 end
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38
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39 function m = size(obj)
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40 m = obj.m;
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41 end
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42
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43 % points returns a n x d matrix containing the coordianets for all points.
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44 % points are ordered according to the kronecker product with X*Y*Z
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45 function X = points(obj)
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46 X = zeros(obj.n, obj.d);
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47
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48 for i = 1:obj.d
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49 if iscolumn(obj.x{i})
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50 c = obj.x{i};
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51 else
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52 c = obj.x{i}';
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53 end
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54
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55 m_before = prod(obj.m(1:i-1));
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56 m_after = prod(obj.m(i+1:end));
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57
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58 X(:,i) = kr(ones(m_before,1),c,ones(m_after,1));
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59 end
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60 end
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61
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62 % matrices returns a cell array with coordinates in matrix form.
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63 % For 2d case these will have to be transposed to work with plotting routines.
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64 function X = matrices(obj)
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65
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66 if obj.d == 1 % There is no 1d matrix data type in matlab, handle special case
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67 X{1} = reshape(obj.x{1}, [obj.m 1]);
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68 return
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69 end
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70
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71 X = cell(1,obj.d);
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72 for i = 1:obj.d
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73 s = ones(1,obj.d);
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74 s(i) = obj.m(i);
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75
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76 t = reshape(obj.x{i},s);
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77
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78 s = obj.m;
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79 s(i) = 1;
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80 X{i} = repmat(t,s);
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81 end
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82 end
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83
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84 function h = scaling(obj)
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85 if isempty(obj.h)
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86 error('grid:Cartesian:NoScalingSet', 'No scaling set')
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87 end
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88
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89 h = obj.h;
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90 end
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91
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92 % Restricts the grid function gf on obj to the subgrid g.
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93 % Only works for even multiples
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94 function gf = restrictFunc(obj, gf, g)
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95 m1 = obj.m;
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96 m2 = g.m;
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97
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98 % Check the input
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99 if prod(m1) ~= numel(gf)
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100 error('grid:Cartesian:restrictFunc:NonMatchingFunctionSize', 'The grid function has to few or too many points.');
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101 end
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102
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103 if ~all(mod(m1-1,m2-1) == 0)
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104 error('grid:Cartesian:restrictFunc:NonMatchingGrids', 'Only integer downsamplings are allowed');
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105 end
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106
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107 % Calculate stride for each dimension
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108 stride = (m1-1)./(m2-1);
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109
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110 % Create downsampling indecies
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111 I = {};
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112 for i = 1:length(m1)
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113 I{i} = 1:stride(i):m1(i);
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114 end
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115
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116 gf = reshapeRowMaj(gf, m1);
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117 gf = gf(I{:});
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118 gf = reshapeRowMaj(gf, prod(m2));
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119 end
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120
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121 % Projects the grid function gf on obj to the grid g.
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122 function gf = projectFunc(obj, gf, g)
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123 error('grid:Cartesian:NotImplemented')
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124 end
188
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125
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126 % Return the names of all boundaries in this grid.
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127 function bs = getBoundaryNames(obj)
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128 switch obj.D()
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129 case 1
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130 bs = {'l', 'r'};
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131 case 2
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132 bs = {'w', 'e', 's', 'n'};
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133 case 3
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134 bs = {'w', 'e', 's', 'n', 'd', 'u'};
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diff changeset
135 otherwise
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136 error('not implemented');
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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137 end
188
c5ca9bbfed41 Added methods to hande boundaries to Grid. Added failing tests and method stubs.
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138 end
c5ca9bbfed41 Added methods to hande boundaries to Grid. Added failing tests and method stubs.
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139
c5ca9bbfed41 Added methods to hande boundaries to Grid. Added failing tests and method stubs.
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140 % Return coordinates for the given boundary
191
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141 function X = getBoundary(obj, name)
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142 % In what dimension is the boundary?
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143 switch name
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144 case {'l', 'r', 'w', 'e'}
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145 D = 1;
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146 case {'s', 'n'}
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147 D = 2;
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148 case {'d', 'u'}
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149 D = 3;
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150 otherwise
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151 error('not implemented');
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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152 end
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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153
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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diff changeset
154 % At what index is the boundary?
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155 switch name
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156 case {'l', 'w', 's', 'd'}
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157 index = 1;
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158 case {'r', 'e', 'n', 'u'}
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diff changeset
159 index = obj.m(D);
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
160 otherwise
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
161 error('not implemented');
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
162 end
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
163
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
164
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
165
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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diff changeset
166 I = cell(1, obj.d);
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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diff changeset
167 for i = 1:obj.d
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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diff changeset
168 if i == D
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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169 I{i} = index;
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
170 else
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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diff changeset
171 I{i} = ':';
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
172 end
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
173 end
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
174
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
175 % Calculate size of result:
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
176 m = obj.m;
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
177 m(D) = [];
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
178 N = prod(m);
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
179
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
180 X = zeros(N, obj.d);
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
181
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
182 coordMat = obj.matrices();
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
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parents: 188
diff changeset
183 for i = 1:length(coordMat)
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
184 Xtemp = coordMat{i}(I{:});
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
185 X(:,i) = reshapeRowMaj(Xtemp, [N,1]);
7c1d3fc33f90 Added methods for returning boundary names and boundary coordinates from Cartesian and Curvilinear grids.
Jonatan Werpers <jonatan@werpers.com>
parents: 188
diff changeset
186 end
188
c5ca9bbfed41 Added methods to hande boundaries to Grid. Added failing tests and method stubs.
Jonatan Werpers <jonatan@werpers.com>
parents: 173
diff changeset
187 end
154
c7b2f645101f Added classes and functions for Cartesian and equidistant grids.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
188 end
c7b2f645101f Added classes and functions for Cartesian and equidistant grids.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
189 end