How to find minimum value ,correspondings to a column ,in an output ?

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Hello,
I have a question about a code. My code creates an output .txt file with two columns, (let's say x the 1st column and y the 2nd column) and plot the x-y plot. I am using "min(y)" in order to find the minimum value of y column. I would like to prind on my plot the x value that correspont to the minimum value of y column.
Could you please help me?

Accepted Answer

Steven Lord
Steven Lord on 24 Nov 2020
The second output from the min function will help you retrieve the corresponding element of x.
  2 Comments
Ivan Mich
Ivan Mich on 24 Nov 2020
Excuse me but I do not undersatnd you. Which command should I write ?
Steven Lord
Steven Lord on 24 Nov 2020
x = randi(10, 1, 8)
x = 1×8
6 2 9 8 7 4 5 7
y = x.^2
y = 1×8
36 4 81 64 49 16 25 49
[value, loc] = min(y)
value = 4
loc = 2
x(loc)
ans = 2

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