[gradsusr] the commands with variables change in a while loop online

[Jeff Duda]

Yi-Chih,
It appears you wish to plot accumulated precip over 1-hr/3-hr/6-hr periods
(whatever a one-unit increment in your TDEF is).  Try the modified code
below:

########################
"set t 1 57"
"set x 1 138"
"set lat 23.46"
"set parea 1.5  9.7 1 8.3"
"set gxout shaded"
"d tloop(rainnc - rainnc(t-1))"
#######################
I think that last line should give you what you want.  I have used that
command multiple times myself with success.

Jeff
On Sat, Nov 26, 2011 at 2:31 PM, Yi-Chih Huang <dscpln at gmail.com> wrote:

> Hello,
>
>     The command tloop needs data prepared as the description below.
> However, the variable I have is an accumulated variable.  I have to
> calculate the increment with time.  Then what would be the right commands
> to display time-longitude diagrams?
>
> ################
> The tloop function loops through time based on the time increment of the
> default file; it is thus important to have the default file set
> appropriately.
>
>     Thanks much for your help,
>
>                                Yi-Chih
>
>
> On Sat, Nov 26, 2011 at 2:53 PM, Jeff <jeffduda319 at gmail.com> wrote:
>
>> Look up the Grads command tloop. It is probably the answer to your
>> question.
>>
>> Jeff Duda
>>
>> Sent from my Verizon Wireless BlackBerry
>>
>> -----Original Message-----
>> From: Yi-Chih Huang <dscpln at gmail.com>
>> Sender: gradsusr-bounces at gradsusr.org
>> Date: Sat, 26 Nov 2011 14:42:23
>> To: GrADS Users Forum<gradsusr at gradsusr.org>
>> Reply-To: GrADS Users Forum <gradsusr at gradsusr.org>
>> Subject: Re: [gradsusr] the commands with variables change in a while loop
>>        online
>>
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>
>


-- 
Jeff Duda
Grad student - PhD, Meteorology
University of Oklahoma School of Meteorology - Center for Analysis and
Prediction of Storms
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