| Re: Matching Lats and Lons from two arrays [message #62147 is a reply to message #62145] |
Tue, 26 August 2008 09:50   |
pgrigis
Messages: 436
Registered: September 2007
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Senior Member |
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Would something like this work for sorted x (plus some fix for first
and last element)?
There's going to be an overhead for sorting x if not already sorted
however.
x=[3,3.5,4,6.5,7]
y=[3.4, 3.0, 6.8, 6.3]
a=value_locate(x,y)
result=a+( (y-x[a]) GT (x[a+1]-y))
print,result
Ciao,
Paolo
Brian Larsen wrote:
> I have tried this on several occasions (for a little different
> application but I think its the same) and have had no luck eliminating
> the for loop, so I just wrote it in a function to hide it from
> myself. This is my try at this based on value locate:
> http://people.bu.edu/balarsen/Home/IDL/Entries/2008/1/7_roun d2array_(updated_7Jan2008).html
>
> If others know how to eliminate the for loop that would be fantastic.
>
>
> Cheers,
>
> Brian
>
> ------------------------------------------------------------ --------------
> Brian Larsen
> Boston University
> Center for Space Physics
> http://people.bu.edu/balarsen/Home/IDL
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