Re: [ferret_users] Ambiguous time axis

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

hi-
These warnings are not necessarily complaints from Ferret but are to let 
you know that the axes are not the same.  Still I agree with you that 
Ferret should be able to list the variables together on the time axis.

Notice that if you plot the two variables, Ferret is able to translate 
the time axes to dates.

   yes? plot/L=1:10 t2m[d=1], t2m[d=2]

So we'll look into all of this.

On 6/14/2011 7:06 AM, Brockmann Patrick wrote:
> Hi all,
>
> Using 2 variables with apparently correct time axis (they do not ave 
> the same range),
> I get a warning and time axis switched to indices when I use the command
> "list" with the 2 variables.
> In the same time, when I use the "save" command, it works nicely. 
> Proof that the
> time axis can be shared between the 2 variables.
>
> I do not understand why ferret complains with this "list" command.
>
> Try :
> yes? go err67_ambiguous_time.jnl
>
> use ambiguous_time_f1.nc
> use ambiguous_time_f2.nc
>
> list/l=1:20 T2M[d=1], T2M[d=2]
> WARNING: Listed variables have ambiguous coordinates on axes: T
> Column  1: T2M[D=ambiguous_time_f1] is Temperature 2m 
> (K)(X=178.1E(-181.9):178.1E@AV4, Y=90.9S:90.9N@AV4)
> Column  2: T2M[D=ambiguous_time_f2] is Temperature 2m 
> (K)(X=178.1E(-181.9):178.1E@AV4, Y=90.9S:90.9N@AV4)
>          T2M    T2M
> L /  1:  286.5  286.6
> L /  2:  286.5  286.5
> L /  3:  286.7  286.6
> ...
>
> Available from:
> http://dods.ipsl.jussieu.fr/brocksce/ferret_bugs/err67_ambiguous_time.jnl
> http://dods.ipsl.jussieu.fr/brocksce/ferret_bugs/ambiguous_time_f1.nc
> http://dods.ipsl.jussieu.fr/brocksce/ferret_bugs/ambiguous_time_f2.nc
>
> Tested with 6.67, 6.7 on Linux 32, x86_64.
> Any help welcome.
>
> Patrick