xmuLabel {umx}

xmuLabel: Add labels to a RAM model, matrix, or path

Description

xmuLabel adds labels to things, be it an: mxModel() (RAM or matrix based), an mxPath(), or an mxMatrix() This is a core function in umx: Adding labels to paths opens the door to umxEquate(), as well as omxSetParameters()

Usage

xmuLabel(
  obj,
  suffix = "",
  baseName = NA,
  setfree = FALSE,
  drop = 0,
  labelFixedCells = TRUE,
  jiggle = NA,
  boundDiag = NA,
  verbose = FALSE,
  overRideExisting = FALSE,
  name = NULL
)

Arguments

obj

An mxModel() (RAM or matrix based), mxPath(), or mxMatrix()

suffix

String to append to each label (might be used to distinguish, say male and female submodels in a model)

baseName

String to prepend to labels. Defaults to NA ("")

setfree

Whether to label only the free paths (defaults to FALSE)

drop

The value to fix "drop" paths to (defaults to 0)

labelFixedCells

= TRUE

jiggle

How much to jiggle values in a matrix or list of path values

boundDiag

Whether to bound the diagonal of a matrix

verbose

How much feedback to give the user (default = FALSE)

overRideExisting

= FALSE

name

Optional new name if given a model. Default (NULL) does not rename model.

Value

• mxModel()

References

• https://github.com/tbates/umx

See Also

Other Advanced Model Building Functions: umxAlgebra(), umxFixAll(), umxJiggle(), umxRun(), umxThresholdMatrix(), umxUnexplainedCausalNexus(), umx, xmuValues()

Examples

## Not run: 
# ==============================================================
# = Show how OpenMx models are not labeled, and then add labels =
# ==============================================================
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)
)

umxGetParameters(m1) # Default "matrix address" labels, i.e "One Factor.S[2,2]"
m1 = xmuLabel(m1)
umxGetParameters(m1, free = TRUE) # Informative labels: "G_to_x1", "x4_with_x4", etc.

# =======================================================================
# = Create a new model, with suffixes added to paths, and model renamed =
# =======================================================================
m2 = xmuLabel(m1, suffix= "_male", overRideExisting= TRUE, name = "male")
umxGetParameters(m2, free = TRUE) # suffixes added

# =============================
# = Example Labeling a matrix =
# =============================
a = xmuLabel(mxMatrix(name = "a", "Full", 3, 3, values = 1:9))
a$labels
a = xmuLabel(mxMatrix(name = "a", "Full", 3, 3, values = 1:9), baseName="bob")
a$labels
# note: labels with "data." in the name are left untouched!
a = mxMatrix(name = "a", "Full", 1,3, labels = c("data.a", "test", NA))
a$labels
xmuLabel(a, verbose = TRUE)
xmuLabel(a, verbose = TRUE, overRideExisting = FALSE)
xmuLabel(a, verbose = TRUE, overRideExisting = TRUE)

## End(Not run)