Re: plotting question

I know of no functions that compute trough or ridge locations.
If someone knows of such a function please post.

Maybe you could write your own ...
at each lat of your grid look for a local minimum [trough]
or maximum [ridge]

On 2/2/11 12:04 AM, shinn wong wrote:
> Thanks Dennis. But I've got another questions. I find it difficult to
> locate the position of the trough. Does anyone have some codes for
> performing this or are there any suggestions of how I can achieve this?
> Any help and suggestion would be greatly appreciated.
> Shinn
>
> 2011/1/29 Dennis Shea <shea@ucar.edu <mailto:shea@ucar.edu>>
>
> If you specify the locations:
>
> possibly
> http://www.ncl.ucar.edu/Document/Functions/Built-in/rcm2points.shtml
>
> or, for rectilinear grids
> http://www.ncl.ucar.edu/Document/Functions/Contributed/linint2_points_Wrap.shtml
>
> Then use gsn_polyline
>
> Good luck
>
>
> On 1/29/11 5:21 AM, shinn wong wrote:
>
> Dear ncl users,
> Does anyone have some simple ways for drawing the trough/ridge axis?
> Many thanks.
> Regards,
> Shinn
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Received on Wed Feb 2 08:07:49 2011