Re: two dimensional lag correlation plot ...

From: Adam Phillips <asphilli_at_nyahnyahspammersnyahnyah>
Date: Mon Aug 26 2013 - 13:42:17 MDT

Hi Ufuk,
If I understand your issue correctly, your sign1 array contains integers
indicating at which lead/lag the maximum correlation occurs at each grid
point, and you want to know how to plot that information on the map?

This type of plotting is referred to as categorical plotting, and there
are a few different examples of how to do it here:

If that is not what you are after please respond back to ncl-talk and
let everyone know.

On 08/25/2013 12:05 PM, Ufuk Utku Turuncoglu (BE) wrote:
> Hi,
> I try to plot two dimensional (lat,lon) time phase relationship
> between precipitation and SST using lag correlation analysis but i had
> some difficulties to create it. The plot that i want to create is very
> similar to the attachedfigure from (Arakawa and Kitoh, 2004).
> I created the attached NCL script to process data and calculate the
> lagged correlations (in this case it is three-dimensional, lat, lon
> and lags - from -30 to 30 days) and the probabilities from
> significance test (using rtest function) but i need to help to convert
> this information to two-dimensional plot. For specific grid cell, the
> data have correlations and rtest values (i am not sure probabilities
> are calculated correctly in my script) but i have to pick up the day
> that is in 0.01 significance level.
> You might give me some advise to create the plot from calculated
> statistics.
> Best Regards,
> --ufuk
> *Ref:*
> Arakawa, O., and A. Kitoh (2004), Comparison of local
> precipitation--SST relationship between the observation and a
> reanalysis dataset, Geophys. Res. Lett., 31, L12206,
> doi:10.1029/2004GL020283
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Adam Phillips                      
NCAR/Climate and Global Dynamics Division       (303) 497-1726
P.O. Box 3000				
Boulder, CO 80307-3000

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Received on Mon Aug 26 13:42:27 2013

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