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Re: Hovmoller [message #94943 is a reply to message #89123]

Wed, 27 December 2017 12:30

laura.hike
Messages: 87
Registered: September 2013

Member

No disrespect intended, but what if we want to make said plot without using Coyote graphics?

On Friday, July 25, 2014 at 1:49:02 PM UTC-7, David Fanning wrote:
> tjc0010@uah.edu writes:
>
>> Well I have about 20 files and will want to show eastward propagation with time
>
> Ah, so you have more than one file. As Wesley says in the Princess
> Bride, "Why didn't you mention the wheelbarrow among our assets the
> first time?"
>
> Presumably these files contain data points at different times. Perhaps
> you have 20 such times. Now we are getting somewhere!
>
> What you have to do is build up a 2D array by selecting for longitude
> and saving the temperatures at those longitudes.
>
> ntimes = 20
>
> ; Read the first file, just to see how big array has to be.
> ... read the data file, extract variables, etc.
> lonIndices = where(lons gt -25 and lons lt 40)
>
> ; Temperature at longitude and time
> data = FltArr(N_Elements(lonIndices), ntimes)
> temps = temps[lonIndices]
> times = FltArr(ntimes)
>
> ; Read the files in a loop and extract info for Hovmoller plot.
> for j=0,19 DO BEGIN
> ... Read file, extract variables, etc.
> times = time[0]
> data[*,j] = temps[lonIndices]
> endfor
>
> Now, make your plot...
>
> cgContour, data, times, lons[lonIndices], ... ; Hovmoller plot
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
> Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Hovmoller By: tjc0010 on Thu, 24 July 2014 12:39
		Re: Hovmoller By: David Fanning on Fri, 25 July 2014 06:36
		Re: Hovmoller By: tjc0010 on Fri, 25 July 2014 11:27
		Re: Hovmoller By: David Fanning on Fri, 25 July 2014 11:47
		Re: Hovmoller By: tjc0010 on Fri, 25 July 2014 12:41
		Re: Hovmoller By: David Fanning on Fri, 25 July 2014 13:20
		Re: Hovmoller By: tjc0010 on Fri, 25 July 2014 13:22
		Re: Hovmoller By: David Fanning on Fri, 25 July 2014 13:49
		Re: Hovmoller By: laura.hike on Wed, 27 December 2017 12:30
		Re: Hovmoller By: Jim Pendleton on Wed, 27 December 2017 18:52
		Re: Hovmoller By: laura.hike on Fri, 29 December 2017 14:22
		Re: Hovmoller By: tjc0010 on Mon, 28 July 2014 12:41

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