Revisions allow you to track differences between multiple versions of your content, and revert back to older versions.
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if you download a new version of the package, or compile a new from from the svn, you can load the new version by doing
detach("package:OpenMx") library(OpenMx)
You can view the list of demo files with this command:
demo(package='OpenMx')
Then this will show you where they are on your system
system.file("demo", "BivariateSaturated_PathCov.R", package="OpenMx") [1] "/Users/~/Library/R/2.9/library/OpenMx/demo/BivariateSaturated_PathCov.R"
(you need to add ".R" to the displayed name that demo() reveals)
A named entity is the term used by the OpenMx library for any S4 object that includes the slot "name". Common S4 classes that instantiate named entities are MxModel, MxMatrix, MxAlgebra, MxObjectiveFunction, and MxData. An equivalent answer to this question would be any S4 object 'foo' such that 'foo@name' will return a value.
Have a look at our common errors list
Yes, there is. You can install it using Getbundles