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Re: [ferret_users] listing a date/time value in a label
Hi Hein,
It is very easy, get the time string in a variable using
RETURN command (as you mentioned), edit that time string (if you
want) and then use that edited string for labelling. Two examples
are given below :
Example 1
---------
! use "set reg" --> time is set to a fixed point, hence tstart and
! tend will be same as the time fixed by 'set reg' command
!----------------------------------------------------------------
use monthly_navy_winds
set reg/l=10
shade /nolab uwnd ; go land
let dstring = "`uwnd[d=1],return=tstart`" ! return=tend also work
let cdate = SUBSTRING(dstring,1,11) ! if we need only date
label 180, 105, 0, 0, 0.15 @C007`cdate`
Example 2
----------
! specify time explicitly using L index, use the same index for
! plot and dtring. Here also both tend and tstart will give same
! time point.
!---------------------------------------------------------------
use monthly_navy_winds
shade/nolab uwnd[l=20] ; go land
let dstring = "`uwnd[d=1,l=20],return=tstart`" ! return=tend also work
let cdate = SUBSTRING(dstring,1,11) ! if we need only date
label 180, 105, 0, 0, 0.15 @C007`cdate
Hope this helps,
Jaison
On Tue, 13 Mar 2007, Hein Zelle wrote:
> Dear Ferret users,
>
> how can I put a time value (as shown for example by list t[g=myvar])
> in a text label? I want something similar to
>
> say `myvar, return=tend`
>
> but instead of the last time value, I want to specify the time index
> or use the current region. The following does not work (gives the
> numerical time value instead of a formatted date/time string):
>
> say `t[g=myvar,l=10]`
>
> Any help appreciated.
> Kind regards,
>
> Hein Zelle
>
>
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