Re: Ridges and troughs

I believe you want to draw fronts:
http://www.ncl.ucar.edu/Document/Functions/Built-in/wmdrft.shtml
Good luck
jimmyc

On 4/13/09 8:14 AM, "Michel dos Santos Mesquita"
<Michel.Mesquita_at_bjerknes.uib.no> wrote:

> Hi,
>
> I am working on a plot where I need to draw a 'ridge' line (MSLP
> chart). In the book "Weather Analysis" page 32 (Djuric), 'ridges' are
> drawn as kinked lines and 'troughs' as wavy lines. Is there a way to
> do that using gsn_add_polyline?
>
> Another question: I need to make a line illustrating the flow of air
> in an MSLP chart. This is not a straight line. If I use
> gsn_add_polyline, the curve I am trying to draw looks more like a
> 'step function' than a smooth curve. When I try to use a bicubic
> spline, I get an error saying that I don't have enough input data:
> "SPLCC or SPLCW - SUPRLS failure". And if I use 'ftcurvs', I get error
> 4, which means that my lines are not increasing. This is because my
> latitude and longitude vary (increasing/decreasing). Is there a way to
> draw such curves in NCL?
>
> I thank you so much in advance!
>
> Kindest regards,
>
> Michel
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Received on Mon Apr 13 2009 - 09:18:02 MDT