[gradsusr] Trend line in Grads

[Tereza Cavazos]

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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