Re: [ferret_users] time axis error

[David Wang <dwang@xxxxxxxxxxxxxxxxx>]

Since the time axes of your datasets are degenerate, alternatively you 
can remove the time axes before subtraction by using

fill INTRA_...[d=2,l=1:1@max] - INTRA_...[d=1,l=1:1@max]

David

jean oliveira wrote:
> A quick answer. Try
>  
> yes? fill 
> INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE[d=2]-INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE[d=1,gt=INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE]
>  
> Jean Felix
>
>  
> ------------------------------------------------------------------------
> Date: Wed, 7 Apr 2010 23:01:32 +0200
> From: izidinep@xxxxxxxxx
> Subject: [ferret_users] time axis error
> To: ferret_users@xxxxxxxx
>
> Dear ferrets users
> Iam trying to do the difference between two variables and I am having 
> the following error.
> How can I solve this?
>
>  currently SET data sets:
>     1> ./eca_etr.moz.daily.1981_1999.echama2.nc 
> <http://eca_etr.moz.daily.1981_1999.echama2.nc/>
>  name     title                             I         J         
> K         L
>  INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE
>           Difference between the absolute  1:52      1:87      
> 1:1       1:1
>  
>     2> ./eca_etr.moz.daily.2031_2049.echama2.nc 
> <http://eca_etr.moz.daily.2031_2049.echama2.nc/>  (default)
>  name     title                             I         J         
> K         L
>  INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE
>           Difference between the absolute  1:52      1:87      
> 1:1       1:1
>  
> yes? fill 
> INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE[d=2]-INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE[d=1]
>  *** NOTE: Ambiguous coordinates on T axis: 
> INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE[D=2]-INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE[D=1]
>  **ERROR: illegal limits: INTRA_PERIOD_EXTREME_TEMPERATURE_RANGE does 
> not exist at T=02-MAR-1999 12:00
>           Axis extremes are T=02-MAR-1999 12:00
>
>
> Any help is strongly appreciated
> --
> I.P.
> :-)
>
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--
Daiwei Wang
Department of Earth and Environmental Sciences and
Lamont-Doherty Earth Observatory
Columbia University