Normally, the points on the graph are connected by lines.  If
instead you would like to use symbols you can do something like
this:<p>
<pre>
    data <a href="test.dat">test.dat</a>
    xcolumn 2
    ycolumn 3
    xlabel Cosine (Angle)
    ylabel Sine (Angle)
    <a href="connect.html">noconnect</a>
    <a href="symbolnumber.html">symbolnumber</a> 3
    symbolsize 0.06
    <a href="symbolevery.html">symbolevery</a> 3
    plot
    title Scatter Plot
</pre>
<p>

which would produce a graph like:<p>
<img src="scatter.gif">