Re: NARR datasets : zooming in and/or overlaying

From: Dennis Shea <shea_at_nyahnyahspammersnyahnyah>
Date: Wed Sep 05 2012 - 20:09:13 MDT

See:

http://www.ncl.ucar.edu/Document/Functions/Contributed/region_ind.shtml

On 9/5/12 7:57 PM, Derek Mallia wrote:
> Hello,
>
>
> I recommend doing the following:
>
> For map settings, set you max/min lat lon that you want to use:
>
> mpres@mpMinLatF = 39
> mpres@mpMaxLatF = 45
> mpres@mpMinLonF = -104
> mpres@mpMaxLonF = -95
>
> And comment out the below text:
>
> res@mpLimitMode = "Corners" ; choose range of map
> res@mpLeftCornerLatF = lat2d(0,0)
> res@mpLeftCornerLonF = lon2d(0,0)
> res@mpRightCornerLatF = lat2d(nlat-1,mlon-1)
> res@mpRightCornerLonF = lon2d(nlat-1,mlon-1)
>
>
> If your strictly following the example on the NCL webpage... (I am more
> comfortable with the lat/lon min max functions thus why I went with it)
>
>
> For overlay do the following where x is the precip variable that you
> read in:
>
> map = gsn_csm_map(wks,res)
> precip = gsn_csm_contour(wks,(10,:,:),eres)
>
>
> overlay(map,x)
>
>
> I haven't seen your script or your data so I am not 100% sure if this
> will work or not. Anyways, give it a try and good luck!
>
>
> Cheers,
>
>
>
>
>
> -Derek Mallia
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------
> *From:* "jokalebo@huskers.unl.edu" <jokalebo@huskers.unl.edu>
> *To:* "ncl-talk@ucar.edu" <ncl-talk@ucar.edu>
> *Sent:* Wednesday, September 5, 2012 5:15 PM
> *Subject:* [ncl-talk] NARR datasets : zooming in and/or overlaying
>
> Dear Sir/Madam,
> I have modified the narr_3.ncl to read precipitation from grib files
> from NARR http://www.ncl.ucar.edu/Applications/narr.shtml.
> However, I am having difficulties zooming in on Nebraska (Latitude 39 N
> to 45 N and Longitudes 95 W to 104 W). Does anyone out there
> use overlay for NARR datasets?
> Thanks so much. Your help will be much appreciated.
>
> Jane Okalebo
> PhD student
> HPRCC, School of Natural Resources
> University of Nebraska-Lincoln
> 249 Hardin Hall
> 3310 Holdrege,
> Lincoln, Nebraska 68583-0749 U.S.A.
>
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Received on Wed Sep 5 20:09:26 2012

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