<?xml version='1.0' ?>
<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>
<xsl:output method='text'/>

<xsl:template match="GEDCOM">
        digraph &apos;G&apos; {
        <xsl:apply-templates select="FamilyRec"/>
        <xsl:apply-templates select="IndividualRec"/>
        }
</xsl:template>

<xsl:template match="IndividualRec">
        <xsl:value-of select="@Id"/>[ label=&quot;<xsl:value-of select="IndivNam
e/GivenName"/><xsl:text> </xsl:text><xsl:value-of select="IndivName/SurName"/> &
quot;];
</xsl:template>

<xsl:template match="FamilyRec">
        <xsl:variable name="famId"><xsl:value-of select="@Id"/></xsl:variable>
        <xsl:if test="HusbFath">
                <xsl:value-of select="HusbFath/Link/@Ref"/>-&gt;<xsl:value-of se
lect="$famId"/>;
        </xsl:if>

        <xsl:if test="WifeMoth">
                <xsl:value-of select="WifeMoth/Link/@Ref"/>-&gt;<xsl:value-of se
lect="$famId"/>;
        </xsl:if>

        <xsl:for-each select="Child">
                <xsl:value-of select="$famId"/>-&gt;<xsl:value-of select="Link/@
Ref"/>;
        </xsl:for-each>

</xsl:template>

</xsl:stylesheet>

 private void button2_Click(object sender, System.EventArgs e) {

string strCmdLine1 = "-Tsvg -o c:\\tmp\\foo.xml c:\\tmp\\ER.dot";
string strCmdLine2 = "-Tsvg -o c:\\tmp\\foo.xml c:\\tmp\\Heawood.dot";
System.Diagnostics.Process p = new System.Diagnostics.Process();

p.StartInfo.FileName = "\"C:\\Program Files\\ATT\\Graphviz\\bin\\dot.exe\"";
p.StartInfo.CreateNoWindow = true;
p.StartInfo.UseShellExecute = false;
if (graphIndex == 0)
p.StartInfo.Arguments = strCmdLine2;
else
p.StartInfo.Arguments = strCmdLine1;

p.Start();
p.WaitForExit();

axSVGCtl1.reload();
graphIndex = (graphIndex + 1) % 2;
}

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/math/dot-line-length [v1.0]

dotLineLength = function( x, y, x0, y0, x1, y1, o ){
	function lineLength( x, y, x0, y0 ){
		return Math.sqrt( ( x -= x0 ) * x + ( y -= y0 ) * y );
	}
	if( o && !( o = function( x, y, x0, y0, x1, y1 ){
		if( !( x1 - x0 ) ) return { x: x0, y: y };
		else if( !( y1 - y0 ) ) return { x: x, y: y0 };
		var left, tg = -1 / ( ( y1 - y0 ) / ( x1 - x0 ) );
		return { x: left = ( x1 * ( x * tg - y + y0 ) + x0 * ( x * - tg + y - y1 ) ) / ( tg * ( x1 - x0 ) + y0 - y1 ), y: tg * left - tg * x + y };
	}( x, y, x0, y0, x1, y1 ), o.x >= Math.min( x0, x1 ) && o.x <= Math.max( x0, x1 ) && o.y >= Math.min( y0, y1 ) && o.y <= Math.max( y0, y1 ) ) ){
		var l1 = lineLength( x, y, x0, y0 ), l2 = lineLength( x, y, x1, y1 );
		return l1 > l2 ? l2 : l1;
	}
	else {
		var a = y0 - y1, b = x1 - x0, c = x0 * y1 - y0 * x1;
		return Math.abs( a * x + b * y + c ) / Math.sqrt( a * a + b * b );
	}
};

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/math/dot-line-intersection [v1.0]

dotLineIntersection = function( x, y, x0, y0, x1, y1 ){
	if( !( x1 - x0 ) )
		return { x: x0, y: y };
	else if( !( y1 - y0 ) )
		return { x: x, y: y0 };
	var left, tg = -1 / ( ( y1 - y0 ) / ( x1 - x0 ) );
	return { x: left = ( x1 * ( x * tg - y + y0 ) + x0 * ( x * - tg + y - y1 ) ) / ( tg * ( x1 - x0 ) + y0 - y1 ), y: tg * left - tg * x + y };
};