Datatip not working. Changing location??
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I cannot click on my graph for some wierd reason but whatever i just assumed i could use the datatip command to show the max of my graph.
When i wrote the code the location of DataTip changes for some wierd reason.
Any ideas?
I posted my code blow
heres the value of the variables
m0 = [ 41 91 331]
This is the frequency of the plot
f0 = [ 1 2 0.3]
This is the amplitude of the graph
This the command window it reads:
ans =
DataTip (X 0, Y 3.399e-16) with properties:
Why is it changing the location of the DataTip??
p= plot(f,P1);
m0=find(P1>0.1)
f0=P1(:,[m0])
datatip(p,f0,m0)
3 个评论
Walter Roberson
2020-9-16
What is size(P1) ?
f0=P1(:,[m0])
implies it might have multiple rows. If P1 is not a row vector then find() is returning linear indexing not column indexing.
John Emberson
2020-9-17
John Emberson
2020-9-17
回答（1 个）
Walter Roberson
2020-9-17
0 个投票
You are passing in vectors of x and y coordinates, but datatip is only defined for scalar x and y.
In terms of your plot, f is your independent variable and P1 is your dependent variable. You are extracting some of the P1 entries and passing them in as x coordinates to datatip, and you are passing in indices as your y coordinates to datatip.
When you pass in x and y coordinates, datatip is defined to place the datatip at the nearest point to what you pass in.
You should be passing in f(m0(1)) as your x and f0(1) as your y to datatip()
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2020-9-16
2020-9-17
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