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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
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<A HREF="toc.html">Contents</A>
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<A HREF="1092Addingprogressindicatorstobars.html">Previous</A>
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<HR NOSHADE>
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<H2><A NAME="10_10">10.10 Grouping activities</A></H2>
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<P> It is common to group activities. We have used this feature in the
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examples of constrains. There is no special type for activity bars that
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are used to illustrate grouping. The common way of illustrating this
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(as have been used above) is to add "half" a triangle marker at both
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ends of the bar. The special provision that JpGraph does is that if you
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add a left or right marker of type MARK_LEFTTRIANGLE or
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MARK_RIGHTTRIANGLE those triangles will be drawn under the bars to give
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the effect as show in the examples above. In the example above we also
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have made the grouping bars have slightly less heigh since the end
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triangles will visually "grow" the bar.</P>
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<P> So to get the effect we want for a group bar we have to use the two
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lines:<DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
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$groupbar</FONT><FONT color="#007700">-></FONT><FONT color="#0000BB">
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leftMark</FONT><FONT color="#007700">-></FONT><FONT color="#0000BB">
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SetType</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
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"MARK_LEFTTRIANGLE"</FONT><FONT color="#007700">);
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<BR></FONT><FONT color="#0000BB">$groupbar</FONT><FONT color="#007700">
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-></FONT><FONT color="#0000BB">rightMark</FONT><FONT color="#007700">-></FONT><FONT
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color="#0000BB">SetType</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
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"MARK_RIGHTTRIANGLE"</FONT><FONT color="#007700">)</FONT><FONT color="#0000BB">
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</FONT></FONT></CODE></DIV></P>
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<P></P>
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<P> As of the current version There is not yet any formatting support to
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accomplish the effect of indentation for the titles so this is
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accomplished by using a fixed width font and adding spaces in front of
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the title.</P>
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