OpenMx Help
EmilieRH
Joined: 09/24/2020
Bivariate ACE model with moderator
Hi all,
I am currently working on a project on how school achievement moderates intelligence among young adults. My sample consists of 4,084 German twins aged 17 and 23-24, respectively, who have information on both GPA and intelligence. However, the twins' GPAs come from various types of secondary schools so to check whether I need to use school type as a moderator in my GxE analyses, I first want to see what happens if I run separate bivariate variance decomposition analyses for the three school types constraining their parameters equal.
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jpritsker
Joined: 09/27/2020
How does OpenMx handle missing data with WLS?
I might be missing something obvious, but as far as I can tell, this isn't explicated anywhere. How does OpenMx deal with missing data for WLS? Is it listwise/pairwise or is the polychoric covariance matrix computed using FIML?
PCFLaw
Joined: 08/26/2020
2-class growth mixture model: adding time-invariant covariates & viewing class probabilities
Hi,
I am wondering if I can get some help on a 2-class growth mixture model I'm having trouble with (script and example dataset attached). The model describes a single linear trajectory across 8 time-points (t1-t8). I'm new to OpenMx and I've looked through this forum/other sites but I'm at a loss. I'm trying to (i) add 3 time-invariant covariates ('Sex', 'Age', 'pooled_VA') to the 2-class growth mixture model and (ii) view the class probabilities for each case.
Daisy16
Joined: 06/25/2020
Which Linux is more suitable for installing OpenMX?
I want to install OpenMX on Linux, can anyone tell me which Linux is better?
Thanks
ywsky01
Joined: 08/06/2020
Confidence intervals of ACE model fit
Hi all,
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shenjean
Joined: 06/08/2020
Install OpenMx on server (Linux 4.14.35-1902.10.8.el7uek.x86_64 #2 SMP with R=3.5.1)
Hi,
I am having trouble installing OpenMx on a Linux server where I don't have admin rights. Here are my the details:
===============================
OS/Software versions
===============================
OS=Linux 4.14.35-1902.10.8.el7uek.x86_64 #2 SMP
conda environment
R=3.5.1
gcc=7.1.0
libgcc=7.2.0
Veronica_echo
Joined: 02/23/2018
Install OpenMx in AWS Rstudio (R version 3.4.1)
Hi everyone,
I am trying to install OpenMx in AWS Rstudio with R version 3.4.1. I've tried the following ways:
> install.packages("OpenMx")
Installing package into ‘/home/Vero_BLSGMM/R/x86_64-redhat-linux-gnu-library/3.4’
(as ‘lib’ is unspecified)
and
> source('https://openmx.ssri.psu.edu/software/getOpenMx.R')
Neither worked. Any advice or suggestion on this situation? Thanks in advance.
davide
Joined: 03/13/2020
Constraints
Hi Open Mx Folks
I'm trying to construct a model where I need to implement a constraint across groups. My model is of the form:
Mxgroup1 {
matrix A
matrix B
}
Mxgroup2 {
matrix C
matrix D
}
And I want to employ the constraint A + B = C + D
Any ideas how I can do this?
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Jannik
Joined: 10/01/2018
Custom Optimizer in OpenMx
Hello,
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Arthur
Joined: 02/13/2020
Error: [...] fit is not finite
Dear OpenMx experts/users,
I am using an ACE univariate script with AE, CE and E nested models. I think that the script itself is good and makes sense, however, using a relatively small dataset (40 MZ pairs; 25 DZ pairs) (this is fMRI data), I get the following error message:
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