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Mathematica Import/Export Format

ExpressionML (.xml)

MIME type: text/xml
Mathematica ExpressionML format.
Represents an arbitrary Mathematica expression as XML.
Used for the exchange of general expressions between Mathematica and other applications.
Plain text file, normally encoded as UTF-8.
Developed in 2002 by Wolfram Research.
  • Import["file.xml"] imports an ExpressionML file and returns an expression.
  • Export["file.xml", expr, "ExpressionML"] exports an arbitrary expression to XML.
  • Import["file.xml"] reads an XML file that holds ExpressionML data and converts it to the corresponding Mathematica expression.
  • When reading XML, Import automatically recognizes the ExpressionML format. Generic XML content will be imported as an XMLObject expression.
  • Export["file.xml", expr, "ExpressionML"] converts an arbitrary Mathematica expression to the corresponding ExpressionML data structure and writes it to an XML file.
  • Export["file.xml", XMLObject[...]] converts a symbolic XML expression to generic XML.
  • Import["file.xml", elem] imports the specified element from an ExpressionML file.
  • Import["file.xml", {{elem1, elem2, ...}}] imports multiple elements.
  • The import format can be specified with Import["file", "ExpressionML"] or Import["file", {"ExpressionML", elem, ...}].
  • Export["file.xml", expr, elem] creates an ExpressionML file by treating expr as specifying element elem.
  • Export["file.xml", {expr1, expr2, ...}, {{elem1, elem2, ...}}] treats each expri as specifying the corresponding elemi.
  • Export["file.xml", expr, opt1->val1, ...] exports expr with the specified option elements taken to have the specified values.
  • Export["file.xml", {elem1->expr1, elem2->expr2, ...}, "Rules"] uses rules to specify the elements to be exported.
  • The export format can be explicitly specified in the form Export["file", expr, "ExpressionML"] or Export["file", expr, {"ExpressionML", elems}].
  • See the reference pages for full general information on Import and Export.
"Elements"list of elements and options available in this file
"Rules"full list of rules for each element and option
"Options"list of rules for options, properties and settings
  • Data representation elements:
"Boxes"ExpressionML typeset as a Mathematica box expression
"Expression"arbitrary Mathematica expression
"HeldExpression"unevaluated expression
"XMLObject"ExpressionML as a symbolic XML expression
"XMLElement"nested XMLElement objects