[ferret_users] Extrak variable from many coordinate

[I Made Sapta Hadi <saptahadi9@xxxxxxxxx>]

Hello Ferret User

I have data with .nc format, and have variable M2 like this:

     yes? use M2.nc
yes? show data
     currently SET data sets:
    1> ./M2.nc  (default)
 name     title                             I         J         K         L         M         N
 M2       M2 amplitude                     1:1681    1:1201    ...       ...       ...       ...
 

I also have number uf coordinate in longnitude and latitute in .txt like this:
yes? file/var="lot,lat" cilacap1.txt
yes? show data
     currently SET data sets:
    1> ./M2.nc
 name     title                             I         J         K         L         M         N
 M2       M2 amplitude                     1:1681    1:1201    ...       ...       ...       ...
 
    2> ./cilacap1.txt  (default)
 name     title                             I         J         K         L         M         N
 LOT      LOT                              1:21      ...       ...       ...       ...       ...
 LAT      LAT                              1:21      ...       ...       ...       ...       ...
 
yes? list /i=1:26 lot,lat
             DATA SET: ./cilacap1.txt
             X: 0.5 to 20.5
 Column  1: LOT
 Column  2: LAT
             LOT    LAT
1    /  1:  109.1 -7.690
2    /  2:  109.3 -7.700
3    /  3:  109.4 -7.770

My question is how to get the value of M2 amplitude with the position is the list of the coordinate that i have?? Can any body help me?

Regards

--

I Made Sapta Hadi

Geodetic Engineering Student, Gadjah Mada University, Indonesia

E: saptahadi9@xxxxxxxxx

P: +6285777552216

B: www.madesapta.blogspot.com