Re: Scatterplot

[David Nasatir]

Hello,

I'm the guy trying to fit a line to a scatterplot in PSPP. 

John Darrington suggested it might be done using the REGRESSION 
procedure with "...a bit more manual work".

What would that work be?  What steps should I follow?

I understand that the syntax in SPSS would be something like:

* Curve Estimation.
TSET NEWVAR=NONE .
PREDICT THRU END.
CURVEFIT /VARIABLES=happy  WITH educ
 /CONSTANT
 /MODEL=LINEAR
 /PLOT FIT.

but, of course, that doesn't work in the version of PSPPIRE 0.7.2 that I 
have been using

At the moment I must move the data to Open Office Calc, do the 
regression using that program and then insert a line.  I would rather 
just stay in PSPPIRE 0.7.2 if possible.

Thanks for your help and for all the good work you have been doing

David


John Darrington wrote:
> On Sun, Jul 19, 2009 at 08:37:54PM -0300, michel wrote:
>      
>      Hello,
>
>      
>
>      A Windows user is asking me if there is some way to fit a curve to a
>
>      scatterplot on PSPP. I don't think it is possible
>
>      so far, but I don't know for sure.
>
>      
>
>      Is there some way to do this?
>
>
> Not exactly.  The procedure would be CURVEFIT, which we don't currently
> implement.
>
> But the job could be done with the REGRESSION procedure - the user just
> has to do a bit more manual work.
>
> J'
>
>   
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