[gradsusr] Sum daily values for precipitation

[gabriel gavinho]

I finally made it
much appreciate!

2011/6/29 Jennifer Adams <jma at cola.iges.org>

> If you want to show the gradual accumulation of precip at a single point
> over time, try this:
> 'set lat 'mylat
> 'set lon 'mylon
> 'set t 1 last'
> 'd tloop(sum(precip,t=1,t+0))'
>
> --Jennifer
>
>
>
> On Jun 27, 2011, at 10:12 AM, Rafanoharana Serge Claudio wrote:
>
>
>
> On Wed, Jun 22, 2011 at 9:45 AM, gabriel gavinho <
> gavinho.gabriel at gmail.com> wrote:
>
>> Dear Serge,
>>
>> The solution you proposed did solve the problem envolving the plot of both
>> variables, but it displays a straight line with the final result for
>> accumulated precipitation instead of the increasing line presenting the
>> gradual accumulation. Do you know how can I sort this out?
>> still, thank you very much for your help,
>>
>> regards
>>
>> Gabriel Gavinho
>> Federal University of Rio de Janeiro
>>
>> 2011/6/21 Rafanoharana Serge Claudio <rafanoharana at gmail.com>
>>
>>> Dear Gabriel,
>>>
>>> In order to obtain the total precipitation within a month, you can just
>>> 'define acc=sum(pcp, t=1, t=31)'.
>>> If I really understand what you want is that you would like to display
>>> both daily and accumulation within one graphic. If so, it's a little bit
>>> tricky but what I can suggest is that if you want to display both within one
>>> graphic, try to set gxout linefill since linefill can deal with 2 variables,
>>> then go back to set gxout line so it will be something like:
>>>
>>> 'sdfopen file.nc'
>>> 'set lat -23'
>>> 'set lon -45'
>>> 'set t 1 31'
>>>
>>> 'define acc=sum(pcp, t=1, t=31)'
>>> 'set gxout linefill'
>>> 'set lfcols 0 0'    (----> this is black color and you can refer to
>>> http://www.iges.org/grads/gadoc/colorcontrol.html)
>>> 'd pcp;acc'         (up til here, you have only the x and y value,
>>> without the graphs, so you need to plot the graph)
>>> 'set gxout line'
>>> 'set ccolor 3'
>>> 'd pcp'
>>> 'set ccolor 5'
>>> 'd acc'
>>>
>>> Hope this can help,
>>>
>>>
>>> Regards,
>>>
>>> Serge
>>>
>>> 2011/6/21 gabriel gavinho <gavinho.gabriel at gmail.com>
>>>
>>>> Dear Serge,
>>>>
>>>> I belive I did not make myself clear about the graphic I need.
>>>> suppose I select a single point, let's say lat -23 lon -45, and set the
>>>> time to a month period, I will have the values of precipitation for each day
>>>> as it is in any meteogram.
>>>> My problem is that I need to continually sum the daily valeus so I can
>>>> achive the total precipitation within a month but in a way I can present an
>>>> increasing line in over the daily values.
>>>> I hope I could make it clear and I really appreciate your help
>>>>
>>>> Regars,
>>>> Gabriel Gavinho
>>>> Federal University of Rio de Janeiro.
>>>>
>>>>
>>>> 2011/6/21 Rafanoharana Serge Claudio <rafanoharana at gmail.com>
>>>>
>>>>> Dear Gabriel,
>>>>>
>>>>> What do you mean by "in the same graphic"? because I think it will
>>>>> depends on that. For your precipitation data, if you set your gxout to
>>>>> shaded, I think you won't see both values, but if you set your gxout, for
>>>>> example to contour, you'll be able to see both.
>>>>>
>>>>> Let's say your precipitaion variable is "pcp". It will be something
>>>>> like:
>>>>> 'sdfopen file.nc'
>>>>> 'set gxout contour'
>>>>> 'define acc=sum(pcp, t=1, t=31)'
>>>>> 'd pcp'
>>>>> 'd acc'
>>>>>
>>>>> So if you need for the day 17, just set t to 17 by adding 'set t 17'
>>>>> right after 'sdfopen...'
>>>>> In addition, you can write your accumulation variable to your file
>>>>> using 'set sdfwrite file.nc' followed by 'sdfwrite acc'.
>>>>> Maybe the following will give you more info.
>>>>>
>>>>> I quote from Bob Kuligowski:
>>>>>
>>>>> "GrADS can produce numerous types of file displays using gridded data
>>>>> using set gxout:
>>>>>
>>>>> bar    (bar chart)
>>>>> line    (line graph)
>>>>> barb    (wind barbs)
>>>>> linefill (color fill between two lines)
>>>>> contour    (contour plot)
>>>>> scatter    (scatter plot)
>>>>> errbar    (error bars)
>>>>> shaded    (shaded contour plot)
>>>>> grfill    (shaded grid boxes)
>>>>> stream    (wind streamlines)
>>>>> fgrid    (grid boxes shaded for specified values)
>>>>> vector    (wind vector arrows)
>>>>> grid    (grid boxes with printed values)"
>>>>>
>>>>> Hope it can help,
>>>>>
>>>>> Regards,
>>>>>
>>>>> Serge
>>>>>
>>>>>
>>>>>
>>>>> 2011/6/21 gabriel gavinho <gavinho.gabriel at gmail.com>
>>>>>
>>>>>> Dear Users
>>>>>>
>>>>>> I am having a hard time trying to sum the values for daily
>>>>>> precipitation during a month, in order put together both daily values and
>>>>>> the accumulative sum in the same graphic
>>>>>>
>>>>>> Can you help me?
>>>>>>
>>>>>> regards!
>>>>>>
>>>>>> Gabriel Gavinho
>>>>>> Federal University of Rio de Janeiro
>>>>>>
>>>>>> _______________________________________________
>>>>>> gradsusr mailing list
>>>>>> gradsusr at gradsusr.org
>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Serge
>>>>>
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Serge
>>>
>>
>>
>
>
> --
> Serge
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>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
>
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