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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /><title>SetDrawYDataLabelLines</title><link rel="stylesheet" type="text/css" href="phplotdoc.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="PHPlot Reference Manual" /><link rel="up" href="reference.html" title="PHPlot Function Reference" /><link rel="prev" href="SetDrawYAxis.html" title="SetDrawYAxis" /><link rel="next" href="SetDrawYGrid.html" title="SetDrawYGrid" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">SetDrawYDataLabelLines</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="SetDrawYAxis.html">Prev</a> </td><th width="60%" align="center">PHPlot Function Reference</th><td width="20%" align="right"> <a accesskey="n" href="SetDrawYGrid.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="SetDrawYDataLabelLines"></a><div class="titlepage"></div><div class="refnamediv"><h2><span class="refentrytitle">SetDrawYDataLabelLines</span></h2><p>SetDrawYDataLabelLines &#8212; Draw data label lines for horizontal plots</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">$plot-&gt;SetDrawYDataLabelLines(<em class="parameter"><code>$dydl</code></em>)</pre></div><div class="refsect1"><a id="idp1378032852"></a><h2>Description</h2><p>
<code class="function">SetDrawYDataLabelLines</code> enables drawing of data label lines
for horizontal plot types that support them.
Data label lines are horizontal lines drawn from the data points to the
edge or edges of the plot with the axis data labels.  In the usual case,
with the Y axis data labels on the left side of the plot, the data label
lines would be drawn from the data points to the left side of the plot area.
Depending on the data label locations set with
<a class="xref" href="SetYDataLabelPos.html" title="SetYDataLabelPos"><span class="refentrytitle">SetYDataLabelPos</span></a>, the lines would be drawn left, right, or in
both directions from the data points to the sides of the plot area.
    </p><p>
To use data label lines, you generally want to turn off Y ticks, Y tick labels,
and the Y grid lines.
Your data array needs to provide data labels, which will be drawn by
default on the left side of the plot area.
    </p></div><div class="refsect1"><a id="idp1378035140"></a><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>$dydl</code></em></span></dt><dd><p>
True to draw the data label lines, False to not draw the lines.
          </p></dd></dl></div></div><div class="refsect1"><a id="idp1378036660"></a><h2>Notes</h2><p>
Y data label lines only work with these plot types: lines, points, and
linepoints, and only when using a data type that indicates a horizontal plot.
Data label lines can only be drawn if Y axis data labels are on.
    </p><p>
If a graph contains multiple data sets, data label lines drawn from the left
edge will end at the maximum X value for each Y value.  Data label lines drawn
from the right edge will end at the minimum Y value for each X value.
(Remember that the X and Y axes are in the same position for vertical and
horizontal plots, but the roles of X and Y are reversed for horizontal plots.)
    </p><p>
By default, data label lines are not drawn.
    </p><p>
For an example of Y data label lines, see <a class="xref" href="ex-horizlinepts.html" title="5.48. Example - Horizontal Linepoints Plot with Data Value Labels and Lines">Section 5.48, &#8220;Example - Horizontal Linepoints Plot with Data Value Labels and Lines&#8221;</a>.
    </p><p>
This function is for horizontal plot types. For the usual vertical plot
types, see <a class="xref" href="SetDrawXDataLabelLines.html" title="SetDrawXDataLabelLines"><span class="refentrytitle">SetDrawXDataLabelLines</span></a>.
    </p></div><div class="refsect1"><a id="idp1378039564"></a><h2>History</h2><p>
This function was added in PHPlot-6.0.0. In earlier releases, there was no
support for data label lines in any horizontal plot type.
    </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="SetDrawYAxis.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="reference.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="SetDrawYGrid.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SetDrawYAxis </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> SetDrawYGrid</td></tr></table></div></body></html>