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Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others [message #77253 is a reply to message #77160]

Sun, 14 August 2011 01:49

Nikola
Messages: 53
Registered: November 2009

Member

It seems like you haven't defined wgrid in the procedure
interpolatedsixteen.pro.

linterp is not a standard idl function. Why not use interpol instead
(for the difference see the header of linterp.pro)?

> Also, in each of our 8 data sets, there is an increment of wavelength
> values where the value of the flux is 0, which will make the average
> of all 8 messed up. Do you have any ideas how to write a loop that
> goes through all of the wgrid values and averages the values of the
> interpolated flux values, but skips the flux values that are 0 and
> continues to the next? Is there a skip command? Would a where command
> work the best?

If you need to find mean of an array excluding elements equal to some
variable x (in your case x = 0) you don't need a loop. Just do

mask = array NE x
y = TOTAL(array*mask)/TOTAL(mask)

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[Message index]

		difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Emily Anne Moravec on Fri, 12 August 2011 13:26
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Nikola on Mon, 15 August 2011 01:17
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: wlandsman on Sun, 14 August 2011 17:09
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Emily Anne Moravec on Wed, 17 August 2011 09:10
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Jeremy Bailin on Sun, 14 August 2011 14:16
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Emily Anne Moravec on Wed, 17 August 2011 08:33
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Emily Anne Moravec on Sun, 14 August 2011 13:26
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: wlandsman on Sun, 14 August 2011 13:21
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Emily Anne Moravec on Sun, 14 August 2011 12:47
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Emily Anne Moravec on Sun, 14 August 2011 12:42
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Nikola on Sun, 14 August 2011 01:49
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Jeremy Bailin on Fri, 12 August 2011 17:26
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: wlandsman on Wed, 17 August 2011 09:57
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Michael Galloy on Wed, 17 August 2011 09:35
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: David Fanning on Wed, 17 August 2011 09:17
		Re: difficulty using "linterp" command - need help making loop to exclude a value yet average others By: Brian Wolven on Wed, 17 August 2011 08:43

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