# Re: coordinate use problem

From: jerry <jerry_at_nyahnyahspammersnyahnyah>
Date: Thu, 18 May 2006 17:24:57 +0800

Hi
If i use function "lonFlip" it will change the coordinate variable to :
Variable :VAR
Dimension and sizes: [ lat | 73 ] x [ lon | 144 ]
Coordinates:
lat :[ -90...90 ]
lon:[ -180....178.5 ]
And the area of (longitude : 180~200 ) was been ignored .
So it can't work !!

Do you have any idea ?
Thank you

----- Original Message -----
From: "Julie Arblaster" <jma_at_cgd.ucar.edu>
To: "jerry" <jerry_at_cwb.gov.tw>
Cc: <ncl-talk_at_ucar.edu>
Sent: Thursday, May 18, 2006 4:04 PM
Subject: Re: coordinate use problem

> Hi Jerry,
>
> The contributed function 'lonFlip' can reorder the longitude
> coordinate of your array so that you can subset your data
> effectively.
>
> See
> http://www.ncl.ucar.edu/Document/Functions/Contributed/lonFlip.shtml
>
> Cheers,
> Julie
>
> On Thu, 18 May 2006, jerry wrote:
>
>> Hi
>>
>> I use function "wgt_areaave( VAR( {-10ĄG10},{-20ĄG200} ) , 1 ,1 ,0 )" to
>> calculate the area average
>> (The area range which i need was latitude ĄG -10~10 longitude
>> ĄG -20~200 )ĄA
>> But the coordinate variable of VAR is ĄG
>> Variable ĄGVAR
>> Dimension and sizesĄG [ lat | 73 ] x [ lon | 144 ]
>> CoordinatesĄG
>> lat ĄG[ -90...90 ]
>> lonĄG[ 0....357.5 ]
>>
>> When i use "wgt_areaave( VAR( {-10ĄG10},{-20ĄG200} ) , 1 ,1 ,0 )" ĄAit
>> seems only
>> use the range (latitude ĄG -10~10 and longitude ĄG 0~200) to calculate
>> the area average .
>> The area of (longitude ĄG -20~0) was been ignored .
>>
>> How could i do ?
>>
>> Thanks
>>
>
>

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Received on Thu May 18 2006 - 03:24:57 MDT

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