Re:  longitudes array

Thank you both for your answers!
After the use of the function "lonFlip", the script runs properly;
so thank you to highlight this function!

> Message du 19/01/12 23:19
> De : "Dennis Shea"
> A : elodyfluck@orange.fr
> Copie à : "ncl-talk [ncl-talk]"
> Objet : Re: [ncl-talk] tr: Re:  longitudes array
>
> If you are not familiar with NCL, please read the mini-Language
> Manual at: http://www.ncl.ucar.edu/Document/Manuals
> ---
> Always look at your data. The 't2m' variable is type "short".
> It must be unpacked prior to use.
>
>
> short t2m(time, latitude, longitude) ;
> t2m:scale_factor = 0.00182017431309799 ;
> t2m:add_offset = 261.081126603031 ;
> t2m:_FillValue = -32767s ;
> t2m:missing_value = -32767s ;
> t2m:units = "K" ;
> t2m:long_name = "2 metre temperature" ;
>
> The attached reads and unpacks the variable; flips the variable;
> computes an annual mean. You should be able to do anything
> else yourself. Please upgrade from v4.3
>
> http://www.ncl.ucar.edu/Document/Functions/Contributed/short2flt.shtml
> http://www.ncl.ucar.edu/Document/Functions/Contributed/lonFlip.shtml
> http://www.ncl.ucar.edu/Document/Functions/Contributed/dim_avg_Wrap.shtml
>
> v5.1.1 onward
> http://www.ncl.ucar.edu/Document/Functions/Contributed/dim_avg_n_Wrap.shtml
>
> On 01/19/2012 05:54 AM, elodyfluck@orange.fr wrote:
> >
> > > Message du 19/01/12 13:54
> > > De : elodyfluck@orange.fr
> > > A : "MaryHaley"
> > > Copie à :
> > > Objet : Re: [ncl-talk] longitudes array
> > >
> > > Thank you for your answer!
> >
> > In fact, I'm trying to have an average of temperature at 2 meters
> > (t2m) over West Africa during the period 1996-1997 using Reanalyses
> > ERA INTERIM data. These data are monthly time scaled and parameters
> > are given for the entire world, not for a specific array. My goal is
> > to "zoom" on my studied area. I know that there a functions to do
> > that; but NCL version is here 4.3.0; so I think that I'm limited
> > about the functions to use.
> > I used "fspan" to specify my array, but I think that there are some
> > other ways to select this area.
> > And the final goal is to have a plot from these temperatures
> > overlayed with West Africa map..
> >
> > I sent my NetCDF files on the ftp adress; in "incoming".
> > An image in .jpeg is join. This is the area that I would like to
> > plot. Here, "avg_sahel_t" is dimensioned (21,240,2,12) to see the plot.
> >
> > Thanks in advance for your ideas!
> [snip]
>

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