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Re: Syntax



On Thu, 19 Jun 2003, Bruce W. Ford wrote:
> I have a 144 by 74 grid (2.5 degree global grid).  I want to make a grid
> where each point consists of the zonal average of that latitude.
> 
> In other words each point along the equator would be the same (the average
> of all points on the equator).  At 2.5 degrees north each point along the
> 2.5 would be the same (the average of all points on 2.5), and similar for
> each latitude north and south filling in the grid.
> 
> The syntax for finding the average for one latitude is "let eq_ave =
> tmp[y=0:0@ave]" (equator in this case).
> 
> Can I form an array where the new 144 by 74 grid is zonal averages of each
> latitude?
> 
> Working with zonal averages is an often-used idea, so I'm sure ferret can do
> this in one fell swoop.  Has anyone tackled this one?

use coads_climatology
let sst_xave = sst[x=@ave] + 0*sst
shade/l=1 sst_xave

-Andrew

+--------------------------------------------------------+
|   Dr. Andrew T. Wittenberg   |        GFDL/NOAA        |
|  Andrew.Wittenberg@noaa.gov  |      Princeton, NJ      |
+--------------------------------------------------------+





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