Re: Display map near 180deg E/W

Hi Wee-Beng Tay,

One thing you need to do is set mpCenterLonF to 180 where your data is
centered. The other thing that might be helpful (assuming your west
longitude values are actually stored as negative numbers) is to
convert your longitude values to the range 0-360 so that there is not
a discontinuous jump between 179 E and -179 (W). You can use the
'where' function on your longitude array(s):

lon = where(lon .lt. 0, lon +180, lon)

Hope this helps.
  -dave

On Apr 20, 2010, at 9:24 PM, Wee-Beng Tay wrote:

> Hi,
>
> I am trynig to display a trajectory plot near the location of 180deg
> E/W. However as seen from the attached plot, the trajectories are
> all around the +-180deg location. Some trajectories are in the
> 179deg E, while some are at the 179deg W. I would like to zoom up
> into the location the trajectories are in.
>
> I used :
>
> res@mpMinLatF = -1+(min(min_y))
> res@mpMaxLatF = 1+(max(max_y))
> res@mpMinLonF = -1+(min(min_x)) ;some allowance
> res@mpMaxLonF = 1+(max(max_x))
>
> but it can't work.
>
> Do you have any solution?
>
> Thank you very much.
>
> Regards
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Received on Tue Apr 20 23:46:01 2010