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Editorial Team
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Asked: 2026-06-11T00:44:16+00:00

Default positions are: top, bottom, left, right, etc – but no middle. When I

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Default positions are: top, bottom, left, right, etc – but no “middle”. When I use 

set key top

The legend is placed at top right, by default. How to position it at “top middle”?

Besides, when I add a frame to the legend box, can I control the width of the box? I need this because sometimes the frame cut the text in the legend.

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1 Answer

  1. Editorial Team

    Instead of middle, use center. You can find this instruction in gnuplot by using help

    gnuplot> help key
 The `set key` command enables a key (or legend) describing plots on a plot. 
 [...]
 Syntax:
       set key {on|off} {default}
                     [...]
                    {left | right | center} {top | bottom | center}

    All the other answers are also provided in this help.

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