search for: ztz

Displaying 9 results from an estimated 9 matches for "ztz".

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2009 Nov 09
3
How to transform the Matrix into the way I want it ???
Hi, R users, I'm trying to transform a matrix A into B (see below). Anyone knows how to do it in R? Thanks. Matrix A (zone to zone travel time) zone z1 z2 z3 z1 0 2.9 4.3 z2 2.9 0 2.5 z3 4.3 2.5 0 B: from to time z1 z1 0 z1 z2 2.9 z1 z3 4.3 z2 z1 2.9 z2 z2 0 z2 z3 2.5 z3 z1 4.3 z3 z2 2.5 z3 z3 0 The real matrix I have is much larger, with more than 2000 zones. But I think it should
2007 Nov 12
1
Using lme (nlme) to find the conditional variance of the random effects
Using lmer in the lme4 package, you can compute the conditional variance-covariance matrix of the random effects using the bVar slot: bVar: A list of the diagonal inner blocks (upper triangles only) of the positive-definite matrices on the diagonal of the inverse of ZtZ+Omega. With the appropriate scale factor (and conversion to a symmetric matrix) these are the conditional variance-covariance matrices of the random effects. Is there anything similar in the nlme package using the lme function? Rick B.
2006 Aug 21
1
Retrieving p-values and z values from lmer output
I can't find a way to retrieve z values and p-values from the output from lmer in the lme4 package. How is this done? Rick B.
2004 Nov 09
1
Some questions to GLMM
...: 469 Number of Groups: 21 ============================= Question 6: When I tried method="Laplace" an error occurred: > g1<-GLMM(count~thick+I(thick^2),random=~thick+I(thick^2) |plantid,poisson,data=Dataset,method="Laplace") Using optimizer nlm Error: rank deficiency of ZtZ+W detected at column 11 Is that indicating multicollinearity? Is there is a possibility to avoid this? I got also from time to time the message Omega[1] is not positive definite Can I fix this somehow? Question 7: Is there a possibility to calculate something like a pseudo-r- square (e.g. 1-(l...
2006 Jul 04
1
lmer print outs without T
Hi, I have been having a tedious issue with lmer models with lots of factors and lots of levels. In order to get the basic information at the beginning of the print out I also have to generate these enormous tables as well. Is there a method command to leave off all of the effects and correlations? Or, do I have to go to string commands?
2006 Jul 15
3
names() function and lmer()
Hello All, I would like to retrieve some of the results from the lmer(...) function in library lme4. If I run a model, say fm.1 <- lmer(y ~ 1 + (1 | x), data = dog) and try names(fm.1), I get NULL. Is there anyway to retrieve the information? Thanks
1997 Sep 16
8
Re: Security Concern..
[Mod: This message is a reason *why* linux-security is moderated list. This is also a reason why Rogier, myself, Alan Cox and others really do not want to have completely open lists that deal with security related aspects of running a system as way too many people just jump to conclusions and give suggestions without doing any reasearch on a subject. -- alex (co-moderator of
2009 Jul 23
1
[PATCH server] changes required for fedora rawhide inclusion.
...h{WFo^^7&62JZ5@%1GHfzA$rKL3J1 zM#7{Rd{;OL`{^aOOGuD`kZMR~Y!!jzVmfNOn2rh;(@}^3axqnl!HDS4yBZ|fyIN=j zJx6G^7pVqy2g8UiuAv at LD+Cbjj2@5fJzfibpankA2yvUHWo!IZvC`?>m{nftONu*5 zN!RlZ_}iD(X9kITw&?7VFB##{bB2>Xw<BF%7coSL&%Lm~=un#F-dSKovJz1JeD^Bt zjjR<06dJAB#=1JXuqvW9n=bUhPc$V<<L}D$ZTzY7QY~c;@rjKRv{$f>b{fN!jBv5; zNjFf^jr;hJfEs*XOQ!tqYqB^%lB9K(h$a?VXno94k<2f7MMSSCCvCd5*!v-tCvxd_ zK>Bchwy6{h=3R^2=vvhuM1ne>vNQQ%ycV|K{WV{z!W`<WNT!cL1#gNN_c8xXVl~C* zE_19lBF=j%yv7JtY7t+cQVg^0=vthcY1<wX+z8FJ>d!#|Ja1SRY^&aD@*SG0a{k-G z`0cgk8$RnhqXJg^MMI1VVZ`4I>;?u&0|xxXh7I...
2008 Jun 30
4
Rebuild of kernel 2.6.9-67.0.20.EL failure
Hello list. I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without modifications. How did I try it? Created a (non-root) build environment (not a mock ) Installed the kernel.scr.rpm and did a rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee prep-out.log The build failed at the end: Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL Checking