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<H3><A NAME="7_1_6">7.1.6 Handling null-values in line plots</A></H3>
<P> JpGraph offers two ways of handling null values (or discontinuities)
 in the data. You can either have a &quot;whole&quot; in the data or the line may
 be extended between the previous and next data point in the graph.</P>
<P> If the data value is null (&quot;&quot;) or the special value &quot;x&quot; then the
 data point will not be plotted and will leave a gap in the line.</P>
<P> If the data value is &quot;-&quot; then the line will be drawn between the
 previous and next point in the data ignoring the &quot;-&quot; point.</P>
<P> The following example shows both these possibilities.</P>
<P><DIV class="example">
<BR> <A href="exframes/frame_nullvalueex01.html" target="blank"><IMG border="0"
HEIGHT="250"       src="img/img/img/img/img/img/nullvalueex01.png" WIDTH="400"></A>
<BR><B>Figure 15:</B> Handling null values in line graphs <A href="exframes/frame_nullvalueex01.html"
target="blank">[src]</A>&nbsp;
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