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locating the closest values? [message #80682]

Tue, 26 June 2012 13:55

anil
Messages: 34
Registered: August 2009

Member

Hi,
I have two datasets/files. 1st one contains the values i want to find
(latitudes and longitudes) and the second file contains 3 columns as
longitude latitude and depth.
What i want to do is to read my desired values from file 1 and find
the closest values in file 2 and the corresponding 3rd column(depth)
from file 2. here is what i did:
1st file:
42.25 30.57
41.17 32.58
......
2nd file
42.55 34.42 1000
41.54 33.21 1500
.......
what i did is :

difference1=abs(lon-desiredlon)
a1=min(difference1,index1)

difference2=abs(lat-desiredlat)
a2=min(difference2,index2)

in this case, lon(index1) and lat(index2) become my desired values. no
problem with that. but how do i get the 3rd column. i could not match
index1 and index2 with where function.
what am i missing here?

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