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Re: How can i get the co-ordinates of the peaks in a plot? [message #50332 is a reply to message #50321]

Mon, 25 September 2006 05:05

Braedley
Messages: 57
Registered: September 2006

Member

zircola wrote:
> I used max function to get the y value but don't know how to get the
> corresponding x value and how to get the xy value of the more than one
> peaks. please help. thanks:)

An optional argument for max is max_subscript. Set this to a named
variable to get the index of the array that contains the maximum value.
Then it's as simple as subscripting your x array with that named
variable.

y_val=max(y, max_index, /abs)
x_val=x[max_index]
print, 'The maximum occured at ', x_val, ' and had a value of ', y_val

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[Message index]

		Re: How can i get the co-ordinates of the peaks in a plot? By: Paul Van Delst[1] on Mon, 25 September 2006 13:29
		Re: How can i get the co-ordinates of the peaks in a plot? By: Braedley on Mon, 25 September 2006 05:05
		Re: How can i get the co-ordinates of the peaks in a plot? By: Tigran Khanzadyan on Mon, 25 September 2006 02:10
		Re: How can i get the co-ordinates of the peaks in a plot? By: zircola on Thu, 28 September 2006 17:45

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