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1 <!-- Copyright 2002 Geodise Project, University of Southampton -->
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2 <!-- matlab.xsd - Jasmin Wason - 01/11/02 -->
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3 <!-- Schema to validate XML documents generated by the xml_save function -->
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4 <!-- of the XML Toolbox for Matlab written by Marc Molinari. -->
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5 <!-- Modification 14/11/02 Jasmin Wason -->
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6 <!-- Included a definition for the complex element -->
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7 <!-- Modification 27/11/02 Jasmin Wason -->
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8 <!-- Added complex element as a child of struct, sparse and cell -->
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9 <xs:schema targetNamespace="http://www.geodise.org/matlab.xsd" xmlns="http://www.geodise.org/matlab.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
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10 <!-- struct element definition -->
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11 <!-- A struct element contains 0 or more struct, double, char, sparse, cell or complex elements -->
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12 <!-- These child elements may appear in any order -->
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13 <!-- A struct element contains a list of attributes as described in the structAttributes attributeGroup -->
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14 <xs:element name="struct">
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15 <xs:complexType>
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16 <xs:choice minOccurs="0" maxOccurs="unbounded">
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17 <xs:element ref="struct" />
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18 <xs:element ref="double" />
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19 <xs:element ref="char" />
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20 <xs:element ref="sparse" />
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21 <xs:element ref="cell" />
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22 <xs:element ref="complex" />
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23 </xs:choice>
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24 <xs:attributeGroup ref="structAttributes" />
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25 </xs:complexType>
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26 </xs:element>
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27 <!-- double element definition -->
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28 <!-- double may contain numerical entities of type integer, double, long etc -->
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29 <!-- The content is a list of XSD doubles -->
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30 <!-- and a list of attributes as described in the commonAttributes attributeGroup -->
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31 <xs:element name="double">
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32 <xs:complexType>
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33 <xs:simpleContent>
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34 <xs:extension base="listOfXsdDoubles">
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35 <xs:attributeGroup ref="commonAttributes" />
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36 </xs:extension>
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37 </xs:simpleContent>
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38 </xs:complexType>
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39 </xs:element>
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40 <!-- char element definition -->
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41 <!-- char contains alphanumerical entities (characters, strings, etc.) -->
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42 <!-- The content is an XSD string -->
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43 <!-- and a list of attributes as described in the commonAttributes attributeGroup -->
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44 <xs:element name="char">
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45 <xs:complexType>
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46 <xs:simpleContent>
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47 <xs:extension base="xs:string">
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48 <xs:attributeGroup ref="commonAttributes" />
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49 </xs:extension>
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50 </xs:simpleContent>
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51 </xs:complexType>
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52 </xs:element>
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53 <!-- sparse element definition -->
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54 <!-- sparse contains sparse matrices (2 arrays of type double and 1 array of type double or complex) -->
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55 <!-- ([i], [j], [k]), S(i, j)=k) -->
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56 <!-- A sparse element is either empty or contains -->
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57 <!-- a list of 2 double + 1 double or complex element -->
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58 <!-- and a list of attributes as described in the commonAttributes attributeGroup -->
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59 <xs:element name="sparse">
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60 <xs:complexType>
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61 <xs:sequence minOccurs="0">
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62 <xs:element ref="double" minOccurs="2" maxOccurs="2" />
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63 <xs:choice>
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64 <xs:element ref="double" minOccurs="1" maxOccurs="1" />
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65 <xs:element ref="complex" minOccurs="1" maxOccurs="1" />
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66 </xs:choice>
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67 </xs:sequence>
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68 <xs:attributeGroup ref="commonAttributes" />
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69 </xs:complexType>
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70 </xs:element>
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71 <!-- cell element definition -->
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72 <!-- cell contains cell entities -->
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73 <!-- A cell element contains 0 or more struct, double, char, sparse, cell or complex elements -->
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74 <!-- These child elements may appear in any order -->
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75 <!-- A cell element contains a list of attributes as described in the commonAttributes attributeGroup -->
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76 <xs:element name="cell">
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77 <xs:complexType>
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78 <xs:choice minOccurs="0" maxOccurs="unbounded">
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79 <xs:element ref="struct" />
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80 <xs:element ref="double" />
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81 <xs:element ref="char" />
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82 <xs:element ref="sparse" />
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83 <xs:element ref="cell" />
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84 <xs:element ref="complex" />
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85 </xs:choice>
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86 <xs:attributeGroup ref="commonAttributes" />
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87 </xs:complexType>
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88 </xs:element>
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89 <!-- complex element definition -->
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90 <!-- complex contains complex numbers a+ib with real part a and imaginary part b, which are both represented by entries of type double -->
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91 <!-- A complex element contains a list of either 2 or 0 double elements -->
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92 <!-- and a list of attributes as described in the commonAttributes attributeGroup -->
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93 <xs:element name="complex">
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94 <xs:complexType>
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95 <xs:sequence>
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96 <xs:element name="double" minOccurs="2" maxOccurs="2">
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97 <xs:complexType>
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98 <xs:simpleContent>
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99 <xs:extension base="nonEmptyListOfXsdDoubles">
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100 <xs:attributeGroup ref="commonAttributes" />
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101 </xs:extension>
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102 </xs:simpleContent>
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103 </xs:complexType>
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104 </xs:element>
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105 </xs:sequence>
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106 <xs:attributeGroup ref="commonAttributes" />
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107 </xs:complexType>
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108 </xs:element>
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109 <!-- commonAttributes is a list of attributes that all struct, double, char, sparse and cell elements have -->
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110 <xs:attributeGroup name="commonAttributes">
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111 <xs:attribute name="idx" type="xs:integer" use="required" />
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112 <xs:attribute name="name" type="xs:string" use="optional" />
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113 <xs:attribute name="size" type="listOfXsdInts" use="optional" default="1 1" />
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114 <!-- idx indicates what position in the parent array this element belongs. For root element i="0" -->
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115 <!-- name represents the name of the current element inside a structure -->
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116 <!-- name only occurs in elements inside a structure, although this schema does not enforce this rule -->
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117 <!-- size represents the size of the entry. It allows Matlab to form matrices from vectors with reshape() -->
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118 </xs:attributeGroup>
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119 <!-- structAttributes is a list of attributes that all struct elements have -->
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120 <xs:attributeGroup name="structAttributes">
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121 <xs:attributeGroup ref="commonAttributes" />
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122 <xs:attribute name="fields" type="listOfXsdStrings" use="optional" />
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123 <!-- Include all the attributes in commonAttributes -->
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124 <!-- fields contains the field names of a structure. -->
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125 </xs:attributeGroup>
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126 <!-- listOfXsdDoubles is a type describing a list of xs:doubles -->
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127 <!-- i.e. a double as defined by the XML Schema specification, not matlab.xsd -->
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128 <xs:simpleType name="listOfXsdDoubles">
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129 <xs:list itemType="xs:double" />
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130 </xs:simpleType>
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131 <!-- nonEmptyListOfXsdDoubles is a type describing a list of xs:doubles -->
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132 <!-- with length at least 1 -->
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133 <xs:simpleType name="nonEmptyListOfXsdDoubles">
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134 <xs:restriction base="listOfXsdDoubles">
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135 <xs:minLength value="1" />
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136 </xs:restriction>
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137 </xs:simpleType>
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138 <!-- listOfXsdInts is a type describing a list of integers -->
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139 <xs:simpleType name="listOfXsdInts">
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140 <xs:list itemType="xs:int" />
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141 </xs:simpleType>
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142 <!-- listOfXsdStrings is a type describing a list of strings -->
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143 <xs:simpleType name="listOfXsdStrings">
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144 <xs:list itemType="xs:string" />
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145 </xs:simpleType>
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146 </xs:schema>
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