[gradsusr] Linear regression

David Nielsen davidnielsen at id.uff.br
Fri Apr 1 17:41:11 EDT 2016

Hi, Ana,

Once you already have the values for a and b in y=ax+b, being time your x,
I imagine you could use the time variable of you file and do something like:

'a=(your a value here)'
'b=(your b value here)'
while (count < number)
'set t ' count
   'y=a*t + b'
   rc = write ("path\file.txt",y)

Then you will have a txt with a y value for each t in one column. Is this
what you need?


On Wed, Mar 30, 2016 at 1:02 PM, Ana Tobón <ana.tobon at outlook.com> wrote:

> Hello,
> I'm relatively new in GrADS and I have a question. I have a NetCDF file
> and with a grads script I could calculate the intercept and the slope of a
> linear regression model. Now I need to construct the fitted model (y=a+bx)
> based on the slope and intercept I calculated before being the time the
> independent variable, how can I create a time variable or how can I
> construct the fitted model? This way I would have the fitted model and I
> could calculate the residuals which is what I need.
> Thanks in advance,
> Ana.
> _______________________________________________
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> gradsusr at gradsusr.org
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