Density measurment using cumulative plots
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I have two plots
plot(a,b)
hold on
plot(c,d)
and now i need do:
Accepted Answer
Image Analyst
on 27 Feb 2022
0 votes
Did you try trapz()?
3 Comments
Zuzana Pániková
on 28 Feb 2022
Edited: Zuzana Pániková
on 28 Feb 2022
Zuzana Pániková
on 1 Mar 2022
the trapz() does not work.
this is my graph and i need to calculate:
Image Analyst
on 1 Mar 2022
You forgot to attach the data and your code.
More Answers (3)
Zuzana Pániková
on 2 Mar 2022
0 votes
1 Comment
Image Analyst
on 2 Mar 2022
I don't know. What are the two mat files and the xlsx file in the zip file? Which is yRed, yBlue, and the x values?
Zuzana Pániková
on 4 Mar 2022
0 votes
Image Analyst
on 4 Mar 2022
One way is to simply sum the curves and subtract them.
area = abs(sum(d) - sum(b));
That assumes there are no negative values, the curves don't cross, and treats the values like a bar chart (bars with flat tops). If you want to treat them like quadilaterals (like bars but slanted tops), you can use trapz().
1 Comment
Zuzana Pániková
on 5 Mar 2022
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on 27 Feb 2022
on 5 Mar 2022
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