Re: gsn_csm_hov()

Hi,

I use lonPivot(data, 180)

http://www.ncl.ucar.edu/Document/Functions/Contributed/lonPivot.shtml

to arrange data so that the resulting Hovmoller diagram is centered on the
Greenwich meridian

http://www.isac.cnr.it/dinamica/projects/forecasts/monthly/globomf/output/2014-04-20/Z500HovNH_000

Daniele

> The function gsn_csm_hov
> <http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_csm_hov.shtml>()
> seems to assume that in data the longitude is already sorted in 0 to 360
> deg range, as the negative longitude values do not work right for my
> test data. Unlike maps where I can use the "mpCenterLonF" to define
> center of longitude of the plot, I don't find a similar resource that
> can work the same way for this function, or is there?
>
> What if the longitude spans from slightly west of Greenwich all the way
> east and just across the international date line, in which case there is
> a gap in the western hemisphere. Ideally it shall plot continuously
> without gaps.
>
> -Fan
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-- 
Daniele Mastrangelo
Institute of Atmospheric Sciences and Climate
CNR-ISAC
Via Gobetti 101, I-40129 Bologna
tel: +39 051 639 9602
fax: +39 051 639 9658
e-mail: d.mastrangelo@isac.cnr.it
        daniele.mastrangelo@gmail.com
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