Re: [ferret_users] erratic IF masking behaviour

Not sure exactly,

I tested like this

[akshay@aix ~]$ f
     NOAA/PMEL TMAP
     FERRET v6.85
     Linux 2.6.18-371.1.2.el5 64-bit - 11/12/13
     11-Dec-13 09:34

yes? let ifhf = 0.5000
yes? let hd = 36.75
yes? ! assume that hdhf is 55
yes? let hdhf = 55
yes? let hdf= IF ifhf eq 1 then hdhf else hd
yes? list ifhf,hd,hdhf,hdf
Column 1: IFHF is 0.5000
Column 2: HD is 36.75
Column 3: HDHF is 55
Column 4: HDF is IF IFHF EQ 1 THEN HDHF ELSE HD
            IFHF    HD    HDHF    HDF
I / *:     0.5000 36.75 55.00 36.75

Akshay

On Wed, Dec 11, 2013 at 9:38 AM, Akshay Hegde <akshay.k.hegde@xxxxxxxxx> wrote:

What's hdhf ?

-Akshay

On Wed, Dec 11, 2013 at 9:05 AM, Lev Tarasov <lev@xxxxxx> wrote:

Why does the IF condition not work in the
masking below and how do I fix this:
(ie CONDITION should be false, but hdf doesn't take on
the ELSE value of hd)

let hdf= IF ifhf eq 1 then hdhf else hd

yes? list ifhf
VARIABLE : IF HFB GT HDG THEN 1 ELSE 0
FILENAME : idHhpt.nn9927
LONGITUDE: 69W (interpolated)
LATITUDE : 41.5N (interpolated)
T : -20
0.5000

yes? list hd
...
LONGITUDE: 69W (interpolated)
LATITUDE : 41.5N (interpolated)
36.75
yes? list hdf
...
LONGITUDE: 69W (interpolated)
LATITUDE : 41.5N (interpolated)
35.50

note using
NOAA/PMEL TMAP
FERRET v6.401
Linux(g77) 2.6.9-89.ELsmp - 12/09/09
11-Dec-13 00:05

Cheers,

lev

Lev Tarasov - Dept of Physics and Physical Oceanography,
Memorial University of Newfoundland.
email: lev@xxxxxx
http://www.physics.mun.ca/~lev/
Currently at Antarctic Research Centre,
Victoria University of Wellington