labeling points on graph

Question

Benjamin Cowen 2016-2-7

0
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https://ww2.mathworks.cn/matlabcentral/answers/267031-labeling-points-on-graph

评论： Joseph Cheng 2016-2-7

I have this script:

n = [10e21,10e18,10e27,10e36,10e32]; kt = [10000, 10, 1000, 10, 10^5]; loglog(kt,n,'go')

How can I label each point on my graph with a unique string value?

I want to add the text, "Reactor" at the first point, and add another word to the second pt etc.

How can I do this?

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Answer 1

Joseph Cheng 2016-2-7

1
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https://ww2.mathworks.cn/matlabcentral/answers/267031-labeling-points-on-graph#answer_208906

在 MATLAB Online 中打开

you can use the function text() like here in my example

n = [10e21,10e18,10e27,10e36,10e32]; 
kt = [10000, 10, 1000, 10, 10^5]; 
loglog(kt,n,'go')
strings = {' reactor', ' point 1',' point 2',' point3',' point4'}
for ind = 1:length(n)
    text(kt(ind),n(ind),strings{ind})
end

i inserted an extra space at the beginning of each label to space it away from the point. since its a loglog plot you'll probably have to use a % of the n and/or kt spacing to properly space it.