GNU Info

(gnuplot.info)clip

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 `gnuplot` (Note: gnuplot ) can clip data points and lines that are near the
 boundaries of a graph.

 Syntax:
       set clip <clip-type>
       set noclip <clip-type>
       show clip

 Three clip types are supported by `gnuplot`: `points` (Note: points ), one,
 and two. One, two, or all three clip types may be active for a single graph.

 The `points` clip type forces `gnuplot` to clip (actually, not plot at all)
 data points that fall within but too close to the boundaries.  This is done
 so that large symbols used for points will not extend outside the boundary
 lines.  Without clipping points near the boundaries, the plot may look bad.
 Adjusting the x and y ranges may give similar results.

 Setting the `one` clip type causes `gnuplot` to draw a line segment which has
 only one of its two endpoints within the graph.  Only the in-range portion of
 the line is drawn.  The alternative is to not draw any portion of the line
 segment.

 Some lines may have both endpoints out of range, but pass through the graph.
 Setting the `two` clip-type allows the visible portion of these lines to be
 drawn.

 In no case is a line drawn outside the graph.

 The defaults are `noclip points`, `clip one`, and `noclip two`.

 To check the state of all forms of clipping, use
       show clip

 For backward compatibility with older versions, the following forms are also
 permitted:
       set clip
       set noclip

 `set clip` is synonymous with `set clip points`; `set noclip` turns off all
 three types of clipping.