[gradsusr] Trend line in Grads

[gopika suresh]

Sir,
   How to draw spatial trend in grads?


On Tue, Dec 2, 2014 at 11:28 AM, Tereza Cavazos <tcavazos at cicese.mx> wrote:

> Hola Carlos,
>
> Thanks for the tip.
> Cheers,
>
> Tereza
> El dic 1, 2014 11:36 AM, "Carlos Batista" <krlosbatist at gmail.com>
> escribió:
>
> Hi Teresa !!!
>>
>> I never did significance calculations only for trend data ...
>>
>> I think it's possible (...)
>>
>> To make my calculations of significance I used the following
>>
>> ***CALCULO DA SIGNIFICANCIA 90%***
>> ***cor=my variable
>> ***387my temporal seria
>>
>> 'q pos'
>> 'c'
>> 'set grads off'
>> 'define den=pow(cor,2)'
>> 'define sig=abs(cor*sqrt(387/(1-den)))'
>>
>> 'set xaxis 0 360 40'
>> 'set yaxis -88 88 20'
>>
>>
>> * 90% significancia
>> 'set cmin 1.282'
>> 'd sig'
>>
>>
>> Cheers!
>> Carlos
>>
>>
>> 2014-12-01 16:09 GMT-02:00 Tereza Cavazos <tcavazos at cicese.mx>:
>>
>>> Hi,
>>>
>>> Is it possible to calculate the statistical significance of the trend in
>>> Grads?
>>>
>>> Cheers,
>>>
>>> Tereza
>>>
>>> El 01/12/2014 09:34 a.m., Carlos Batista escribió:
>>> > Hi Debanjana Das!!! How are u
>>> >
>>> > The ltrend is possible use with show example. You will need use a
>>> > dependency call qdims.gsf (...)
>>> >
>>> > See here: http://www.atmos.umd.edu/~bguan/grads/GrADS_Scripts.html
>>> >
>>> >
>>> > 'reinit'
>>> >
>>> > 'sdfopen sst.mnmean.nc'
>>> >
>>> > 'set t 1 last'
>>> >
>>> > 'ltrend sst sstl s e'
>>> >
>>> > 'define new_variable=aave(sstl,lon=0,lon=360,lat=-88,lat=88)'
>>> >
>>> > 'd a'
>>> >
>>> > Cheers!
>>> >
>>> > 2014-12-01 7:25 GMT-02:00, Debanjana Das <debanjanadas88 at gmail.com>:
>>> >> how to use this function? what is the command line?
>>> >>
>>> >> On Mon, Dec 1, 2014 at 2:24 PM, Carlos Batista <krlosbatist at gmail.com
>>> >
>>> >> wrote:
>>> >>
>>> >>> Hi
>>> >>>
>>> >>> You can use a ready function (Ltrend) that is on this site!
>>> >>>
>>> >>> http://www.atmos.umd.edu/~bguan/grads/GrADS_Scripts.html
>>> >>>
>>> >>> Calculate your variable and then give display!!
>>> >>>
>>> >>> Cheers!
>>> >>>
>>> >>>
>>> >>> 2014-12-01 6:42 GMT-02:00 gopika suresh <gopikasurvay at gmail.com>:
>>> >>>
>>> >>>> How to include a trend line in grads. Please replay
>>> >>>>
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>>
>>
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