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Re: interpolation/gridding [message #59374 is a reply to message #4672]

Thu, 20 March 2008 05:20

kishore1818
Messages: 24
Registered: June 2007

Junior Member

On Mar 20, 5:45 am, wfz...@bjmb.gov.cn wrote:
> On 3月20日, 上午4时36分, kishore1...@gmail.com wrote:
>
>
>
>> Hi,
>
>> I need some help about the IDL interpolation or gridding function.
>> I have two data sets, both data sets are longitude x latitude wise in
>> this one is regular and another is irregular wise. I will give example
>> then you will get clear idea about my problem.
>
>> Data1: irregular data1 set
>> longitude1=[10.5,21.4,0.51,170.45,.......]= 600 points
>> latitude1=[12.5,0.2,12.2,-10.2,-5.5,.......]= 600 points
>> date1 =[21.32.12.45.13.45.2.34.1.23.]= 600 points
>
>> Data2: regular grid model data sets (97 x 48)
>> longitude2=[0.0,3.75,7.5,11.25......] = 97
>> latitude2= [-87.15,-83.47,-79.77...] = 48
>> data2= [97 x 48]
>
>> I want to interpolate/grid the model(Data2) values to the nearest
>> longitude1 x latitude1 (data1) sets.
>> How to interpolate the model (data2) values to the data1 values.
>
>> I am awaiting for your reply,
>
>> Thanking you,
>
>> Kishore
>
> Hi,
> I have some experience in griddata and interpolation.
> I think you can griddata on data2 to make it become a new grid at
> 600*600 points,and to have a look at the new grid data, which will be
> a array of 600 *600, its value is near data1 or not.
> just my person idea.

Hi,
Thanks for your idea, if a made a grid points 600 x 600 then how to
get the nearest point to data1, because data1 is irregular grid.

Kishore

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[Message index]

		Interpolation/gridding on a sphere? By: tmote on Wed, 12 July 1995 00:00
		Re: interpolation/gridding By: Spon on Thu, 20 March 2008 08:54
		Re: interpolation/gridding By: kishore1818 on Thu, 20 March 2008 05:20
		Re: interpolation/gridding By: wfzhao on Thu, 20 March 2008 01:45

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