I notice that the MODS schema uses xsd:sequence to define the children
of the cartographics element:
<xsd:sequence>
<xsd:element name="scale" minOccurs="0" type="xsd:string"/>
<xsd:element name="projection" minOccurs="0" type="xsd:string"/>
<xsd:element name="coordinates" minOccurs="0"
maxOccurs="unbounded" type="xsd:string"/>
</xsd:sequence>
However, an example of <cartographics> in the MODS User Guidelines
does not conform to the schema:
<subject>
<cartographics>
<coordinates>E 72°--E 148°/N 13°--N 18°</coordinates>
<scale>1:22,000,000</scale>
<projection>Conic proj</projection>
</cartographics>
</subject>
so I wonder if the example is wrong or the Schema (xsd:all instead of
xsd:sequence)? Is there a strong reason why the children should occur
in a rigid order in this case?
Joe Altimus
Arizona State University Libraries
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