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#### Usage

Very handy function to modify the attributes of matrix cells in a model.

omxSetParameters(model, labels, free = NULL, values = NULL, newlabels = NULL, lbound = NULL, ubound = NULL, indep = FALSE)

Arguments

model a MxModel object.

labels a character vector of target parameter names.

free a boolean vector of parameter free/fixed designations.

values a numeric vector of parameter values.

newlabelsa character vector of new parameter names.

lbound a numeric vector of lower bound values.

ubound a numeric vector of upper bound values.

indep boolean. set parameters in independent submodels.

#### Examples

A <- mxMatrix('Full', nrow=3, ncol=3, labels = c('a','b', NA), free = TRUE, name = 'A') *# labels for row 1 and 2, row 3 left unalabelled*
model <- mxModel(A, name = 'model')
model@matrices$A@labels
[,1] [,2] [,3]
[1,] "a" "a" "a"
[2,] "b" "b" "b"
[3,] NA NA NA
model <- omxSetParameters(model, c('a', 'b'), values = c(1, 2)) *# set value of cells labelled "a" and "b" to 1 and 2 respectively*
model <- omxSetParameters(model, c('a', 'b'), newlabels = c('b', 'a')) *# set label of cell labelled "a" to "b" and vice versa*
*# See the results...*
model@matrices$A
@labels
[,1] [,2] [,3]
[1,] "b" "b" "b"
[2,] "a" "a" "a"
[3,] NA NA NA
@values
[,1] [,2] [,3]
[1,] 1 1 1
[2,] 2 2 2
[3,] 0 0 0

#### Gotchas

This function cannot modify parameters that have NA labels (i,e, label your matrix cells if you want to use this to set and drop parameters.

#### See Also

omxGetParameters, omxAssignFirstParameters

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