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OpenMx 2.0 Discussion

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No user picture. lovleenkaur Joined: 11/03/2018

Graphene Band Calculations

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OpenMx 2.0 Discussion
Dear readers,

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No user picture. lovleenkaur Joined: 11/03/2018

Graphene Band Calculations

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OpenMx 2.0 Discussion
Dear readers,

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No user picture. krzysiek Joined: 09/05/2013

NPSOL optimizer in OpenMx

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OpenMx 2.0 Discussion
Hi,

I'd like to use NPSOL optimizer. I tried to switch from CSOLNP to NPSOL optimizer using mxOption but it doesn't work. Also, I was not able to install NPSOL by applying omxGetNPSOL() function. What should I do to use NPSOL optimizer? I use Windows 10, and my version of R is 3.5.1, and OpenMx 2.10.

best regards,
Krzysiek

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Picture of user. bwiernik Joined: 01/30/2014

Unbiased SRMR/CRMR estimators

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OpenMx 2.0 Discussion
Maydeu-Olivares and colleagues have recently derived unbiased estimators and confidence intervals for the standardized root mean square residual and correlation root mean square residual (https://link.springer.com/article/10.1007%2Fs11336-016-9552-7), and these seem to perform quite well (https://www.tandfonline.com/doi/abs/10.1080/10705511.2017.1389611). In general, I find the residual-based fit statistics appealing for their interpretibility, particularly when combined with other fit indices that include parsimony penalty.
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Picture of user. tbates Joined: 07/31/2009

What fields are being printed to the console by mxRun?

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OpenMx 2.0 Discussion
Hi,
When `mxRun` is temporarily printing to the console during runs, what are the fields printed?

e.g. These three:

CSOLNP 221 5471.78 -133.1

e.g. And the three here?

MxComputeNumericDeriv 924 1966.39 -4.547e-13

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Picture of user. dtofighi Joined: 10/12/2009

mxBootstrapEvalByName() bug?

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OpenMx 2.0 Discussion
Hello,

It appears that the argument *bq* in *mxBootstrapEvalByName()* function does not accept new probabilities and only computes the default probabilities. To show, I am pasting below a self-contained example and its output:

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Picture of user. bwiernik Joined: 01/30/2014

Status of parallelization on Windows

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OpenMx 2.0 Discussion
I was wondering what the status of supporting multicore systems on Windows. I thought that several compilers were available that supported OpenMP on Windows, and I was wondering if OpenMP-supporting builds of the OpenMX Windows binary were on a development timeline. (Note that this area is outside my wheelhouse, so I might be mistaken about the obstacle to Windows multicore support.)
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No user picture. janneadolf Joined: 02/06/2015

NPSOL and Linux: BLAS/LAPACK routine ' DGEQR' error code -6

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OpenMx 2.0 Discussion
I am having problems using NPSOL on a linux grid computing system:
After installing OpenMx via getOpenMx.R and setting NPSOL as the default optimiser I run an OpenMx demo script (e.g., OneFactorPathDemo.R) and get the following error message:

*Error in runHelper(model, frontendStart, intervals, silent, suppressWarnings, : BLAS/LAPACK routine ' DGEQR' gave error code -6*

Things are fine when I use the other optimizers - but were also in the past with NPSOL.

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No user picture. snoopychang Joined: 10/24/2017

theoretical base for tssem1

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OpenMx 2.0 Discussion
Dr Cheung:
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Picture of user. bwiernik Joined: 01/30/2014

Bug in mxGetExpected()

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OpenMx 2.0 Discussion
I'm trying to compute the expected covariance matrix using mxGetExpected() with a RAM model that includes several mxMatrix objects whose purpose is facilitate algebraic equating of some parameters. When I try to use mxGetExpected() to get the expected covariance, it returns the error:
Error: The following error occurred while evaluating the subexpression '1/(1 + circumplex.v)' during the evaluation of 'z' in model 'circumplex' : non-conformable arrays

By contrast umx::umxExpCov() returns the matrix as expected.

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