Thanks D. Shea,
it worked. I do have, indeed, a cyclic point since my data for longitudes
0.01 and 359.99 is the same. However, I did not expect lonFlip to notice that
because these longitudes are not mathematically equal to 0 and 360.
Paulo
On Tuesday 02 November 2004 05:32, Dennis Shea wrote:
> Your longitudes are spaced 3.75 degress apart. The 0.01 and 359.99
> look out of place. Assumin that the 0.01 and the 359.99
> really refer to 0.0 and 360, then "yes", the longitudes
> and, presumably, the data array do contain a cyclic pt.
>
> lonFlip assumes that the array does not explicitly contain
> the cyclic values.
>
> Let x(....,nlat,mlon) where mlon contains the cyclic values
>
> xNew = lonFlip( x(...,nlat,mlon-1) )
> printVarSummary( xNew )
>
> If you are using NCL plot functions like "gsn_csm_contour_map_ce"
> then this is the way the functions expects the data.
>
> Good luck
>
> > the contributed ncl function "lonFlip" doesn't work with my data which
> > longitude coordinate is the right most dimension and global. Why? Does it
> > have a cyclic point?
> > -----
> > Variable: lon (coordinate)
> > Type: float
> > Total Size: 388 bytes
> > 97 values
> > Number of Dimensions: 1
> > Dimensions and sizes: [lon | 97]
> > Coordinates:
> > Number Of Attributes: 2
> > long_name : Longitude
> > units : degrees_east
> > (0) 0.01
> > (1) 3.75
> > (2) 7.5
> > (3) 11.25
> > ......
> > (93) 348.75
> > (94) 352.5
> > (95) 356.25
> > (96) 359.99
> >
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