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How to add a horizontal line in a bar plot????

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Thor
Thor 2013-2-1
编辑： Pablo Sánchez 2020-12-8
Dear all,
i use the command bar for a plot. I want to insert a horizontal line in a bar plot at y = 30. How can I do that? Thank you!

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-2-1
编辑：Azzi Abdelmalek 2013-2-1
xlim=get(gca,'xlim');
hold on
plot(xlim,[30 30])
  2 个评论
Image Analyst
Image Analyst 2013-2-1
Isn't the first line unnecessary? xlim is already the x limits - you don't have to call get() to retrieve it, it's already ready to be used "as is". xlim is actually a function itself that returns the x limits.
Thor
Thor 2013-2-2
bar(X);
hold on
plot(xlim,[30 30], 'r')
works too! Thank you all!

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更多回答（1 个）

Vivian Hauss
Vivian Hauss 2016-7-19
编辑：Vivian Hauss 2016-7-19
A bit shorter:
hline(30,':k','This Line is horizontal')

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