# Re: Vector plots for irregular spaced 1D data

From: Hobbs, Will R (3244-CalTech) <William.R.Hobbs_at_nyahnyahspammersnyahnyah>
Date: Tue May 03 2011 - 15:40:44 MDT

Andrew

I can think of two methods, depending on how you want your plot to look.
One way to do this which I "think" would work would be to create 'dummy'
2-d arrays of U and V (with appropriate lat/lon coords), with all values
set to missing except for the locations identified by you 1d lat/lon
fields; the function getind_latlon2d might be helpful in this regard
http://www.ncl.ucar.edu/Document/Functions/Contributed/getind_latlon2d.shtm
l).

Another way of doing this would be to plot the winds using the wmbarbmap
procedure over a regular contour map
(http://www.ncl.ucar.edu/Document/Functions/Built-in/wmbarbmap.shtml).

Will

On 5/3/11 2:34 PM, "Andrew Penny" <andybpenny@hotmail.com> wrote:

>Hi all,
>
>I have 1D U and V arrays with corresponding 1D latitude and longitude
>arrays and would like to overlay a vector plot on top of a scalar plot. I
>can
>use "sfXArray" and "sfYArray" just fine for the scalar plot, but when I
>try
>using "vfXArray" and "vfYArray" for the vector plot, I get an error
>complaining
>that I don't have 2D data arrays:
>
>fatal:Number of dimensions in parameter (1) of (gsn_csm_vector) is (1),
>(2) dimensions were expected
>
>Can this be done? If so, what am I missing? Thanks in advance!!
>
>
>Andrew Penny
>Research Associate - Meteorology Department
>Monterey, CA 93943
>Phone: (831) 656-3101
>
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Received on Tue May 3 15:40:56 2011

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