Re: [ferret_users] Interpolating to another depth axis

[Andrew Wittenberg - NOAA Federal <andrew.wittenberg@xxxxxxxx>]

Hi Sulagna,

   let temp_on_votemper = temp[d=2,gz=votemper[d=1]]

Please see User's Manual section 4.2.4.1, "Regridding transformations":

   http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/Grids-Regions/GRIDS#_VPINDEXENTRY_654

Andrew

On Thu, Apr 18, 2013 at 1:24 AM, Sulagna Ray <srlod@xxxxxxxxxxxxxxxxxxx> wrote:
> Dear Ferret Users,
>
>    I have two sets of data on different depth axis as shown below. As you can see both ranges between 5-2000m. I would now like to interpolate Data 2 on the same axis at Data 1. This should result not only in shortening from 26 levels (in Data 2) to 24 levels (in Data 1) but at the same depth values as in Data 1. how efficiently could I do it?
>
> Any help from the community would be highly appreciated.
>
> Thanking you,
> Sulagna
>
> Data 1:
> list votemper[d=1,x=120,y=20,l=10]
>              VARIABLE : sea_water_potential_temperature (degC)
>              FILENAME : EST1.nc
>              SUBSET   : 24 points (Z (m))
>              X        : 120
>              Y        : 20
>              TIME     : 01-JUL-1958 00:00 NOLEAP
>                 120
>                120
>
>  5      /  1: -1.102
>  15     /  2: -1.544
>  25     /  3: -1.624
>  35     /  4: -1.733
>  45     /  5: -1.780
>  55     /  6: -1.802
>  65.1   /  7: -1.795
>  75.1   /  8: -1.775
>  85.3   /  9: -1.756
>  95.5   / 10: -1.733
>  106    / 11: -1.698
>  116.9  / 12: -1.643
>  128.7  / 13: -1.566
>  142.2  / 14: -1.468
>  159    / 15: -1.350
>  182    / 16: -1.217
>  216.6  / 17: -1.070
>  272.5  / 18: -0.910
>  364.3  / 19: -0.747
>  511.5  / 20: -0.594
>  732.2  / 21: -0.453
>  1033.2 / 22: -0.374
>  1405.7 / 23: -0.368
>  1830.9 / 24: -0.391
>
> Data 2:
> list temp[d=2,x=120,y=20,l=10]
>              VARIABLE : TEMPERATURE (deg. C)
>              FILENAME : EST2.nc
>              SUBSET   : 26 points (DEPTH (m))
>              LONGITUDE: 120E
>              LATITUDE : 20N
>              TIME     : 14-JAN-1958 16:30
>                 120E
>                 120
>  5       /  1: -1.102
>  15.1    /  2: -1.108
>  25.3    /  3: -1.135
>  35.8    /  4: -1.361
>  46.6    /  5: -1.492
>  58      /  6: -1.572
>  70      /  7: -1.657
>  82.9    /  8: -1.593
>  96.9    /  9: -1.351
>  112.3   / 10: -0.732
>  129.5   / 11: -0.124
>  149     / 12:  0.137
>  171.4   / 13:  0.215
>  197.8   / 14:  0.256
>  229.5   / 15:  0.296
>  268.5   / 16:  0.334
>  317.6   / 17:  0.374
>  381.4   / 18:  0.423
>  465.9   / 19:  0.468
>  579.3   / 20:  0.467
>  729.3   / 21:  0.367
>  918.4   / 22:  0.236
>  1139.2  / 23:  0.110
>  1378.6  / 24:  0.007
>  1625.7  / 25: -0.089
>  1875.1  / 26: -0.174
>
> --
> Sulagna Ray
> Postdoctoral Researcher
> LOCEAN/IPSL
> Universite Pierre et Marie Curie
> 4 place Jussieu, 75252 Paris Cedex 05,  France