Cannot find the script or external object that implements prefix 'local'.

[levalencia]

Hello All, I need to find a way to convert a OWL file to HTML, I found one on Internet but I have that error.This is the xslt file.

<?xml version="1.0" encoding="UTF-8"?><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"  xmlns:xs="http://www.w3.org/2001/XMLSchema"  xmlns:local="uri.local-functions"  xmlns:rdf=" [url="http://www.w3.org/1999/02/22-rdf-syntax-ns#""]http://www.w3.org/1999/02/22-rdf-syntax-ns#"[/url]  xmlns:xsd="http://www.w3.org/2001/XMLSchema#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:owl="http://www.w3.org/2002/07/owl#">	<xsl:output indent="yes"/>	<xsl:template match="/">		<!-- build heirarchy for daughter's parent  -->		<xsl:apply-templates mode="hierarchy"		  select="local:ancestors-of(/rdf:RDF/owl:Class[@rdf:ID='Daughter'])[2]"/>	</xsl:template>	<!-- build hierarchy of all owl:Class descendents -->	<xsl:template mode="hierarchy" match="owl:Class">		<xsl:variable name="name" select="local:name-of(.)"/>		<xsl:element name="{$name}">			<xsl:apply-templates mode="#current"			  select="//owl:Class[                rdfs:subClassOf[                  @rdf:resource=current()/@rdf:about                   or owl:Class/@rdf:about=current()/@rdf:about]]"/>		</xsl:element>	</xsl:template>	<xsl:function name="local:name-of" as="xs:string">		<xsl:param name="class" as="element(owl:Class)"/>		<xsl:choose>			<xsl:when test="$class/@rdf:ID">				<xsl:value-of select="$class/@rdf:ID"/>			</xsl:when>			<xsl:when test="$class/@rdf:about">				<xsl:value-of select="substring($class/@rdf:about, 2)"/>			</xsl:when>			<xsl:otherwise>				<xsl:message terminate="yes">					<xsl:text>Unable to extrapolate an element name from </xsl:text>					<xsl:sequence select="$class"/>				</xsl:message>			</xsl:otherwise>		</xsl:choose>	</xsl:function>	<!-- find the ancestors to an owl:Class (assumes only one ancestor is possible) -->	<xsl:function name="local:ancestors-of" as="element(owl:Class)+">		<xsl:param name="class" as="element(owl:Class)"/>		<xsl:variable name="parent-id" select="$class/rdfs:subClassOf/@rdf:resource, $class/rdfs:subClassOf/owl:Class/@rdf:about"/>		<xsl:variable name="ancestor" select="$class/../owl:Class[$parent-id = @rdf:about]"/>		<xsl:choose>			<xsl:when test="$ancestor">				<xsl:sequence select="$class, local:ancestors-of($ancestor)"/>			</xsl:when>			<xsl:otherwise>				<xsl:sequence select="$class"/>			</xsl:otherwise>		</xsl:choose>	</xsl:function></xsl:stylesheet>

and this is the ontology file

<?xml version="1.0" encoding="UTF-8"?><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"	 xmlns:owl="http://www.w3.org/2002/07/owl#"	 xmlns="http://www.xfront.com/owl/ontologies/camera/#"	 xmlns:camera="http://www.xfront.com/owl/ontologies/camera/#"	 xml:base="http://www.xfront.com/owl/ontologies/camera/">     <![CDATA[     <!-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX -->     <!--                                                             -->     <!--               Camera OWL Ontology                           -->     <!--                                                             -->     <!-- Author: Roger L. Costello                                   -->     <!-- Acknowlegements: Many thanks to the following people for    -->     <!--                  their invaluable input:                    -->     <!--                     Richard McCullough, Yuzhong Qu,         -->     <!--                     Leo Sauermann, Brian McBride and        -->     <!--                     Jim Farrugia.                           -->     <!--                                                             -->     <!-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX -->     ]]>     <owl:Class rdf:ID="Money">          <rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>     </owl:Class>     <owl:DatatypeProperty rdf:ID="currency">          <rdfs:domain rdf:resource="#Money"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>     </owl:DatatypeProperty>     <owl:Class rdf:ID="Range">          <rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>     </owl:Class>     <owl:DatatypeProperty rdf:ID="min">          <rdfs:domain rdf:resource="#Range"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#float"/>     </owl:DatatypeProperty>     <owl:DatatypeProperty rdf:ID="max">          <rdfs:domain rdf:resource="#Range"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#float"/>     </owl:DatatypeProperty>     <owl:DatatypeProperty rdf:ID="units">          <rdfs:domain rdf:resource="#Range"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>     </owl:DatatypeProperty>     <owl:Class rdf:ID="Window">          <rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>     </owl:Class>     <camera:Window rdf:ID="ThroughTheLens"/>     <camera:Window rdf:ID="WindowOnTopOfCamera"/>     <owl:Class rdf:ID="Viewer">         <owl:oneOf rdf:parseType="Collection">               <camera:Window rdf:about="#ThroughTheLens"/>               <camera:Window rdf:about="#WindowOnTopOfCamera"/>          </owl:oneOf>     </owl:Class>     <owl:Class rdf:ID="PurchaseableItem">          <rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>     </owl:Class>     <owl:ObjectProperty rdf:ID="cost">          <rdfs:domain rdf:resource="#PurchaseableItem"/>          <rdfs:range rdf:resource="#Money"/>     </owl:ObjectProperty>     <owl:Class rdf:ID="Body">          <rdfs:subClassOf rdf:resource="#PurchaseableItem"/>     </owl:Class>     <owl:Class rdf:ID="BodyWithNonAdjustableShutterSpeed">          <owl:intersectionOf rdf:parseType="Collection">               <owl:Class rdf:about="#Body"/>               <owl:Restriction>                     <owl:onProperty rdf:resource="#shutter-speed"/>                     <owl:cardinality>0</owl:cardinality>               </owl:Restriction>          </owl:intersectionOf>     </owl:Class>     <owl:Class rdf:ID="Lens">          <rdfs:subClassOf rdf:resource="#PurchaseableItem"/>     </owl:Class>		     <owl:Class rdf:ID="Camera">          <rdfs:subClassOf rdf:resource="#PurchaseableItem"/>     </owl:Class>     <owl:Class rdf:ID="SLR">          <owl:intersectionOf rdf:parseType="Collection">               <owl:Class rdf:about="#Camera"/>               <owl:Restriction>                     <owl:onProperty rdf:resource="#viewFinder"/>                     <owl:hasValue rdf:resource="#ThroughTheLens"/>               </owl:Restriction>          </owl:intersectionOf>     </owl:Class>     <owl:Class rdf:ID="Large-Format">          <owl:subClassOf rdf:resource="#Camera"/>          <owl:subClassOf>               <owl:Restriction>                     <owl:onProperty rdf:resource="#body"/>                     <owl:allValuesFrom rdf:resource="#BodyWithNonAdjustableShutterSpeed"/>               </owl:Restriction>          </owl:subClassOf>     </owl:Class>     <owl:Class rdf:ID="Digital">          <rdfs:subClassOf rdf:resource="#Camera"/>     </owl:Class>     <owl:ObjectProperty rdf:ID="part"/>     <owl:ObjectProperty rdf:ID="lens">          <rdfs:subPropertyOf rdf:resource="#part"/>          <rdfs:domain rdf:resource="#Camera"/>          <rdfs:range rdf:resource="#Lens"/>     </owl:ObjectProperty>     <owl:ObjectProperty rdf:ID="body">          <rdfs:subPropertyOf rdf:resource="#part"/>          <rdfs:domain rdf:resource="#Camera"/>          <rdfs:range rdf:resource="#Body"/>     </owl:ObjectProperty>     <owl:ObjectProperty rdf:ID="viewFinder">          <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#FunctionalProperty"/>          <rdfs:domain rdf:resource="#Camera"/>          <rdfs:range rdf:resource="#Viewer"/>     </owl:ObjectProperty>     <owl:DatatypeProperty rdf:ID="size">          <rdfs:domain rdf:resource="#Lens"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>     </owl:DatatypeProperty>     <owl:DatatypeProperty rdf:ID="aperture">          <rdfs:domain rdf:resource="#Lens"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>     </owl:DatatypeProperty>     <owl:ObjectProperty rdf:ID="compatibleWith">          <rdfs:domain rdf:resource="#Lens"/>          <rdfs:range rdf:resource="#Body"/>     </owl:ObjectProperty>     <owl:ObjectProperty rdf:ID="shutter-speed">          <rdfs:domain rdf:resource="#Body"/>          <rdfs:range rdf:resource="#Range"/>     </owl:ObjectProperty>     <owl:DatatypeProperty rdf:ID="focal-length">          <owl:equivalentProperty rdf:resource="#size"/>          <rdfs:domain rdf:resource="#Lens"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>     </owl:DatatypeProperty>     <owl:DatatypeProperty rdf:ID="f-stop">          <owl:equivalentProperty rdf:resource="#aperture"/>          <rdfs:domain rdf:resource="#Lens"/>          <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>     </owl:DatatypeProperty>	</rdf:RDF>

[levalencia]

I forgot to say that I use ASP.nET, the XML controlits very easy

<body>    <form id="form1" runat="server">    <div>        <asp:Xml ID="Xml1" runat="server" DocumentSource="~/camera.xml" TransformSource="~/XSLTFile.xsl"></asp:Xml></div>    </form></body>

[boen_robot]

ASP.NET doesn't, at least by default, support XSLT 2.0. You'll have to find a way to install SAXON on .NET or try to use another stylesheet that's XSLT 1.0.