Displaying 6 results from an estimated 6 matches for "icontrast".
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2010 Jul 29
0
[R-pkgs] heplots 0.9-3 and candisc 0.5-18 released to CRAN
...r repeated measures designs (untested)
o Revised documentation for repeated measures
o Added center.cex to heplot.mlm()
o Revised mark.H0() to handle 3D plots also
o Added Adoption data -- MMreg with repeated measures
o Added ReactTime data -- 2 within-S, no between-S factors
o Fixed bug with icontrasts
o Added markH0 argument to heplot
o Added label argument to mark.H0()
o Added arrow3d()
o Fixed buglet in pairs.mlm (type)
Version 0.9-0 (2009-12-25)
o Implemented 2D HE plots in heplot.mlm for repeated measures designs
by adding
idata=, idesign=, icontrasts= arguments.
o imatrix= arg...
2010 Dec 15
1
Structure of Anova for obtaining sig. corrected for departure from sphericity
...using the Anova function from the car package,
but fail to understand what should be the model, the idata and idesign
parameter (which seem to be required for a repeated-measures analysis
design).
I'd appreciate any help with getting the right required model and parameters
(idata, idesign and icontrasts).
Thanks,
dror
--------------------
My data set is stored in a data.frame with the following columns:
> names(dat2)
[1] "t.total" "t.err" "trial.num" "subj"
"present.type"
[6] "ord" "group" &...
2011 Sep 22
1
Wrapper of linearHypothesis (car) for post-hoc of repeated measures ANOVA
...Anova() --from the car package--
to
# perform an ANOVA with an intra-subject design (see Details).
#
# Details:
# An intra-subject design is required for the response transformation
of the
# linear model. The intra-subject design may be defined by the
arguments
# idata, idesgin (and optionally icontrasts) defined for the function
Anova()
# in the car package, or alternatively by an Anova.mlm object resulting
from
# that function (applied to modmlm). If both modes of defining the
intra-subjects
# design are used, the design implied by aovmlm prevales.
#
# The name of each element in levelcomb must...
2012 Jul 21
2
car::Anova - Can it be used for ANCOVA with repeated-measures factors.
...ves like expected (i.e., does not interact with the other factors), but when calling Anova on the model, I don't know how I can specify the between-within design (i.e., which parts of the model should interact with the repeated measures factors).
As far as I understand it, neither the idesign, icontrasts or imatrix arguments, nor the linearHypothesis function can specify the within-between design (as far as I get it they all specify the within or intra-subject design, see John Fox's slides from User 2011: http://web.warwick.ac.uk/statsdept/useR-2011/TalkSlides/Contributed/17Aug_1705_FocusV_4-M...
2010 Aug 23
3
extracting p-values from Anova objects (from the car library)
Dear all,
is there anyone who can help me extracting p-values from an Anova object
from the car library? I can't seem to locate the p-values using
str(result) or str(summary(result)) in the example below
> A <- factor( rep(1:2,each=3) )
> B <- factor( rep(1:3,times=2) )
> idata <- data.frame(A,B)
> fit <- lm( cbind(a1_b1,a1_b2,a1_b3,a2_b1,a2_b2,a2_b3) ? sex,
2010 Aug 24
0
mlm for within subject design
...contrasts")= chr "contr.sum"
..$ B: Factor w/ 3 levels "1","2","3": 1 2 3 1 2 3
.. ..- attr(*, "contrasts")= chr "contr.sum"
$ idesign :Class 'formula' length 2 ~A * B
.. ..- attr(*, ".Environment")=
$ icontrasts: chr [1:2] "contr.sum" "contr.poly"
$ imatrix : NULL
- attr(*, "class")= chr "Anova.mlm"
> str(summary(result))
Type III Repeated Measures MANOVA Tests:
------------------------------------------
Term: (Intercept)
Response transformation matri...