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我在 GNU 的同一张图中有一个带有六个不同颜色线的图。现在我的问题是描述图表右侧的每一行,即我必须添加图例。
什么命令对这个问题有用?例如:我必须添加图例作为附图:
启用图例
set key
并为情节的每一行添加描述性标题。例如:
plot x title "simple x function", x**2 title "quadratic function"