Re: [ferret_users] INT showing strange values

[Sulagna <sulagna.ray@xxxxxxxxx>]

Thank you G Satyesh for suggesting an alternate way out. Appreciate it.

Ryo, I hope it is not a bug, and could be solved easily in ferret through some proper specifications. For example, taking only one point (say the first) in my earlier example, it gives the int (NB_DEG_LIB)  correctly if it is int(` NB_DEG_LIB`). i.e. when the user-defined variable is specified in grave accent. So this shows that int () works, but only in grave accents. However, when you use the grave accent for multiple points in the user-defined variable, it gives error.

yes? list/y=49.50n/z=200 NB_DEG_LIB
             VARIABLE : GDN * ( 1 - R1 * R2 ) / (1 + R1 * R2 )
             LATITUDE : 49.5N
             Z (m)    : 200 (interpolated)
             T        : 2
          20.48
yes? list/y=49.50n/z=200 int(NB_DEG_LIB)
             VARIABLE : INT(NB_DEG_LIB)
             LATITUDE : 49.5N
             Z (m)    : 200 (interpolated)
             T        : 2
          3.000
yes? list/y=49.50n/z=200 int(`NB_DEG_LIB`)
 !-> list/y=49.50n/z=200 int(20.48211426660225)
             VARIABLE : INT(20.48211426660225)
          20.00

But doing the above in multiple points :

yes? list/y=40n:50n/z=200 int(`NB_DEG_LIB`)
 **ERROR: invalid command: grave accent doesnt evaluate to scalar
          NB_DEG_LIB

So what would be an alternative way to specify  int(`NB_DEG_LIB`) in the above example?

Thanks for your help.

Best,

Sulagna

On Thu, Apr 8, 2021 at 2:22 AM Ryo Furue <furue@xxxxxxxxxx> wrote:

Dear Sulagna,

Does INT (X) (link) not work on user-defined variables?

It would be nice if you could send a complete (self-contained) example including datafiles if necessary and if they are not too large, so that anybody can reproduce your problem.  If it is a bug (which it looks like, to me), the Ferret developers may like to look at it.

Ryo

 

For example, the variable NB_DEG_LIB has the following values, of which I want to take the integer values, which is supposed to be the part before decimal. However you would see on using int(NB_DEG_LIB) it returns varied values. Am I missing something here? Or should I use something else?

list/y=40n:50n/z=200 NB_DEG_LIB

             VARIABLE : GDN * ( 1 - R1 * R2 ) / (1 + R1 * R2 )

             SUBSET   : 10 points (LATITUDE)

             Z (m)    : 200 (interpolated)

             T        : 2

 49.5N / 140:  20.48

 48.5N / 139:  22.48

 47.5N / 138:  26.17

 46.5N / 137:  29.68

 45.5N / 136:  32.43

 44.5N / 135:  30.92

 43.5N / 134:  32.55

 42.5N / 133:  32.13

 41.5N / 132:  33.28

 40.5N / 131:  32.28

list/y=40n:50n/z=200 int(NB_DEG_LIB)

             VARIABLE : INT(NB_DEG_LIB)

             SUBSET   : 10 points (LATITUDE)

             Z (m)    : 200 (interpolated)

             T        : 2

 49.5N / 140:   3.00

 48.5N / 139:   3.00

 47.5N / 138:   4.00

 46.5N / 137:   7.00

 45.5N / 136:   7.00

 44.5N / 135:  12.00

 43.5N / 134:  19.00

 42.5N / 133:  10.00

 41.5N / 132:   9.00

 40.5N / 131:  11.50

Thanks for your responses.

Best,

Sulagna