Displaying 20 results from an estimated 9000 matches similar to: "Predict(); Warning rank deficient matrix"
2007 Jun 27
1
stepAIC on lm() where response is a matrix..
dear R users,
I have fit the lm() on a mtrix of responses.
i.e M1 = lm(cbind(R1,R2)~ X+Y+0). When i use
summary(M1), it shows details for R1 and R2
separately. Now i want to use stepAIC on these models.
But when i use stepAIC(M1) an error message comes
saying that dropterm.mlm is not implemented. What is
the way out to use stepAIC in such cases.
regards,
2012 Jan 31
0
Error in linearHypothesis.mlm: The error SSP matrix is apparently of deficient rank
Hi,
I have encountered this error when attempting a One-way Repeated-measure ANOVA
with my data.
I have read the "Anova in car: SSPE apparently deficient rank" thread
by I'm not sure the within-subject interaction has more degrees of freedom
than subjects in my case.
I have prepared the following testing script:
rm(list = ls())
2007 Nov 03
0
rank-deficient model matrix
Dear:
I want to construct a gee model in R. When I ran the program, there was a warning in the output.
The warning is "Beginning Cgee S-function, @(#) geeformula.q 4.13 98/01/27
gee(cbind(hyper, nohyper) ~ I(Ethnic) + I(Gender) + I(drink) + :
rank-deficient model matrix"
What is the rank-deficient model matrix? What should I do to
2006 Jan 11
1
hypothesis testing for rank-deficient linear models
Take the following example:
a <- rnorm(100)
b <- trunc(3*runif(100))
g <- factor(trunc(4*runif(100)),labels=c('A','B','C','D'))
y <- rnorm(100) + a + (b+1) * (unclass(g)+2)
m <- lm(y~a+b*g)
summary(m)
Here b is discrete but not treated as a factor. I am interested in
computing the effect of b within groups defined by the
2010 Jan 03
1
Anova in 'car': "SSPE apparently deficient rank"
I have design with two repeated-measures factor, and no grouping
factor. I can analyze the dataset successfully in other software,
including my legacy DOS version BMDP, and R's 'aov' function. I would
like to use 'Anova' in 'car' in order to obtain the sphericity tests
and the H-F corrected p-values. I do not believe the data are truly
deficient in rank. I
2010 Feb 20
0
deficient rank question
Hi everyone. I am a new user of R so thanks for your help! I'm running a
regression and receive an error that states that the "residuals have rank 45
< 169." What does this mean?
Thanks!
--
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Sent from the R help mailing list archive at Nabble.com.
2009 Mar 13
1
lsfit w/ rank-deficient x
Dear R-devel,
It seems that lsfit incorrectly reports coefficients when the input matrix 'x' is rank-deficient, see the example below:
## here values of 'b' and 'c' are incorrectly swapped
> x <- cbind(a=rnorm(100), b=0, c=rnorm(100)); y <- rnorm(100); lsfit(x, y)$coef
Intercept a b c
-0.0227787 0.1042860 -0.1729261 0.0000000
Warning
2010 May 06
1
How to solve: Error with Anova {car} due to "deficient rank" ?
Hello all,
I am getting the following error:
Error in linear.hypothesis.mlm(mod, hyp.matrix.1, SSPE = SSPE, V = V, :
The error SSP matrix is apparently of deficient rank = 7 < 11
After running:
mod.ok <- lm(as.matrix(dat[,-1]) ~ DC, data=dat)
(av.ok <- Anova(mod.ok, idata=idata, idesign=~week))
Although if I jitter the data in "dat", the function seems to work.
What
1999 Jan 22
0
lm with rank-deficient X matrix
Dear all,
I would like to fit an lm in which a subset of the explanatory variables
are linearly dependent. Thus I would like to include the restriction that
all betas of these variables sum to 1. Is there a way to this in R? Or is
this what happens automatically if I set singular.ok= T (which is the
default, I believe)?
Thanks for your help. Lorenz
--
2007 Apr 20
3
How to return more than one variable from function
Dera R users,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
So how to return more than one variable from
function. In C i used to return by pointers etc. is
there any way like that.
Thanks in advance.
2011 Jan 25
0
Warning with predict.glm method
Dear list,
When I use the predict.glm method on a glm fitted object, I get the
following warning message:
In addition: Warning message:
> In predict.lm(object, x) :
> prediction from a rank-deficient fit may be misleading
As the documentation says this happens if "the fit is rank-deficient, some
of the columns of the design matrix will have been dropped".
It is my
2007 Feb 12
3
Help neural network in R
I am interested in Neural network models in R. Is
there any reference material/tutorial which i can use.
Regards,
____________________________________________________________________________________
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2006 Oct 31
0
6308380 e_ddi_majorinstance_to_path implementation deficient for /devices/pseudo paths
Author: cth
Repository: /hg/zfs-crypto/gate
Revision: 8c3216f8ae4cd2c699db490d2a79406f3c420d36
Log message:
6308380 e_ddi_majorinstance_to_path implementation deficient for /devices/pseudo paths
Files:
update: usr/src/uts/common/os/sunddi.c
2007 Jan 27
1
Canging the type of point points sizein plots..
I want to plot variation of more than one variable in
single plot with different point types and points
sizes . Can someone help me to do that,
Thanks in advance.
vinod
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2011 Jun 06
0
lme, stepAIC, predict: scope and visibility
Hello all,
I've run into a problem where I can't run predict.lme on an object simplified via a stepAIC. A similar post has been recorded on this list:
https://stat.ethz.ch/pipermail/r-help/2008-May/162047.html
but in my case, I'm going to great lengths to not repeat that poster's error and still coming up short. Any advice would be much appreciated. It would seem that, after
2004 Nov 02
2
Color schemes that work for people with color-deficient vision
A recent article in the earth science literature cited below and available at
http://geography.uoregon.edu/datagraphics/EOS/
points out that rainbow color schemes and mixtures of green and yellow
can be troublesome for people with color-deficient vision.
The authors propose alternative schemes that can be viewed and downloaded
in RGB, HSV, CMYK, and RGB256 formats from
2008 Aug 13
1
summary.manova rank deficiency error + data
Dear R-users;
Previously I posted a question about the problem of rank deficiency in
summary.manova. As somebody suggested, I'm attaching a small part of
the data set.
#***************************************************
"test" <-
structure(.Data = list(structure(.Data = c(rep(1,3),rep(2,18),rep(3,10)),
levels = c("1", "2", "3"),
class =
2011 Feb 10
1
Newb Prediction Question using stepAIC and predict(), is R wrong?
I'm using stepAIC to fit a model. Then I'm trying to use that model to
predict future happenings.
My first few variables are labeled as their column. (Is this a problem?)
The dataframe that I use to build the model is the same as the data I'm
using to predict with.
Here is a portion of what is happening..
This is the value it is predicting = > [1] 9.482975
Summary of the
2010 Dec 13
1
stepAIC: plot predicted versus observed
Hi,
stepAIC generic plot function creates useful graphics for the diagnosis of
multiple regressions. To create predicted versus observed plots, I use to
look for the coefficients, copy them by hand, calculate R?, then plot. Is
there a more automated way to plot predicted versus observed with its
associated R? output using stepAIC, or another function?
Kind regards,
S.-?. Parent
Universit?
2003 Nov 22
3
summary.manova and rank deficiency
Hi all,
I have received the following error from summary.manova:
Error in summary.manova(manova.test, test = "Pillai") :
residuals have rank 36 < 64
The data is simulated data for 64 variables. The design is a 2*2 factorial with 10 replicates per treatment. Looking at the code for summary.manova, the error involves a problem with qr(). Does anyone have a suggestion as to how to