In addition to creating function plots, gnuplot is also great for plotting data contained in files.

除了创建函数图之外，gnuplot还可以很好地对文件中包含的图形进行绘图。

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To change the style used for plotting data sets as opposed to functions, use set style data linespoints (set data style linespoints in prior versions).

要更改用于绘制与函数相对的数据集合的样式，使用set style data linespoints(以前的版本使用set data style linespoints)。

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The first style, linespoints, is generally useful when plotting data. It marks a point at each sample or data point considered, and connects consecutive points using linear interpolation.

第一种样式linespoints通常在对数据绘图时非常有用，它在涉及的每个示例或数据点处标记一个点，并使用线性插值法连接连续的点。

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Since small deviations are common and large ones are rare, the result of plotting data in this way is a curve shaped somewhat like the cross-section of a bell.

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