Set some legends of a line plot to invisible

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leonidas86
leonidas86 2018-8-9
评论： Giuseppe Degan Di Dieco 2021-5-15
Hello,
I'm plotting multiple lines with the command:
line([Min Min], [minY-20 maxY+20],....);
The variables used in line are all vectors. When adding a legend to this plot Matlab adds for each line an entry in the legend box but I want to show only one entry for all lines.
How can I do this?

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Walter Roberson
Walter Roberson 2018-8-12
There are multiple ways of doing this. The easiest way is to only pass one of the output handles to legend()
h = plot([Min Min], [minY-20 maxY+20],....);
legend(h(1), 'Some Legend')
Other ways include setting the IconDisplayStyle of the other handles to 'off'
https://www.mathworks.com/help/matlab/ref/matlab.graphics.primitive.line-properties.html#d119e676350
The icondisplaystyle approach can also be used in R2014a and earlier; see https://www.mathworks.com/matlabcentral/answers/406-how-do-i-skip-items-in-a-legend
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Giuseppe Degan Di Dieco
Giuseppe Degan Di Dieco 2021-5-15
Dear Walter,
thank you for the tip.
I didn't know this setting of the Legend function.
It really helped me with a bar plot's legend too.
Best.

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