Re: bug in interpreter?

[Hein Zelle <zelle@xxxxxxx>]

Ansley Manke wrote:

>   LET  dtdz_anom = dtdz_month - dtdz_clim[gt=dtdz_month@asn]
> 
> Note that in the definition of dtdz_anom, you regrid dtdz_clim to the
> grid of dtdz_month. The time axis of dtdz_month is hope_month, so
> you could replace
> 
> dtdz_clim[gt=dtdz_month@asn]   with    dtdz_clim[gt=hope_month@asn]
> 
> Now you have a simpler definition.  In a similar example I created,
> this fixes the problem.

Thanks Ansley, I'll try that workaround. In the mean time I already
got the script working using a tip from another colleague, to use the
load command to "preload" complex variables before using them. Adding
the lines

load wv_month
load dtdz_month

at the end of the script, before trying to use any of the derived
variables, seems to fix the problem. Could it be that Ferret gets
confused because in a single variable definition the time axis is
regridded twice? I can imagine that loading the first one forces
ferret to compute it, after which the second regrid action succeeds.

Hein Zelle

>-----------------------------------------------------------------<
    Hein Zelle
    Dept. of Oceographic Research
    KNMI, The Netherlands
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