Your original question was about fitting a curve, rather than plotting one.
Plotting an arbitrary curve would require the GGRAPH command which we don't currently implement. J' On Mon, Jul 20, 2009 at 05:01:26PM -0700, David Nasatir wrote: > Thanks, Jason. > > Using the syntax below, I do, indeed, obtain the desired statistics and > the variables PRED and RESID are created. Now, how do I get the > scatterplot using PRED and RES without leaving PSPP? > > Thanks again, > > David > > > Jason Stover wrote: >> With the REGRESSION procedure, the syntax would be something >> like this: >> >> REGRESSION >> /VARIABLES= educ >> /DEPENDENT= happy >> /STATISTICS=COEFF R ANOVA >> /SAVE= PRED RESID. >> >> You can then make scatterplots using residuals and predicted values. >> >> On Mon, Jul 20, 2009 at 09:42:48AM -0700, David Nasatir wrote: >> >>> 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' >>>> >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> Pspp-users mailing list >>>> Pspp-users@gnu.org >>>> http://lists.gnu.org/mailman/listinfo/pspp-users >>>> >>> >>> _______________________________________________ >>> Pspp-users mailing list >>> Pspp-users@gnu.org >>> http://lists.gnu.org/mailman/listinfo/pspp-users >>> >> >> > > > > _______________________________________________ > Pspp-users mailing list > Pspp-users@gnu.org > http://lists.gnu.org/mailman/listinfo/pspp-users -- PGP Public key ID: 1024D/2DE827B3 fingerprint = 8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3 See http://pgp.mit.edu or any PGP keyserver for public key.
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