umx (version 1.4.0)

umxGetParameters: umxGetParameters

Description

Get the parameter labels from a model. Like omxGetParameters, but supercharged with regular expressions for more power and ease!

Usage

umxGetParameters(inputTarget, regex = NA, free = NA, verbose = FALSE)
parameters(inputTarget, regex = NA, free = NA, verbose = FALSE)

Arguments

inputTarget

An object to get parameters from: could be a RAM mxModel

regex

A regular expression to filter the labels defaults to NA - just returns all labels)

free

A Boolean determining whether to return only free parameters.

verbose

How much feedback to give

References

- http://www.github.com/tbates/umx

See Also

Other Modify or Compare Models: umxAdd1, umxDrop1, umxEquate, umxFixAll, umxMI, umxSetParameters, umxUnexplainedCausalNexus, umx

Examples

require(umx)
data(demoOneFactor)
latents  = c("G")
manifests = names(demoOneFactor)
m1 <- mxModel("One Factor", type = "RAM", 
	manifestVars = manifests, latentVars = latents, 
	mxPath(from = latents, to = manifests),
	mxPath(from = manifests, arrows = 2),
	mxPath(from = latents, arrows = 2, free = FALSE, values = 1.0),
	mxData(cov(demoOneFactor), type = "cov", numObs = 500)
)
m1 = umxRun(m1)
umxGetParameters(m1)
m1 = umxRun(m1, setLabels = TRUE)
umxGetParameters(m1)
umxGetParameters(m1, free = TRUE) # only the free parameter
umxGetParameters(m1, free = FALSE) # only parameters which are fixed
## Not run: 
# # Complex regex patterns
# umxGetParameters(m2, regex = "S_r_[0-9]c_6", free = TRUE) # Column 6 of matrix "as"
# ## End(Not run)