lavaan (version 0.7-2)

lav_plot: Create diagram code for tikz or svg, or produce an R plot

Description

Creates code to draw a diagram in tikz or svg, plots the diagram, or stores the diagram in a png file.

Usage

lav_plot(model = NULL,
        infile = NULL,
        varlv = FALSE,
        placenodes = NULL,
        edgelabelsbelow = NULL,
        group_covar_indicators = FALSE,
        common_opts = list(sloped_labels = TRUE,
                           mlovcolors = c("lightgreen", "lightblue"),
                           italic = TRUE,
                           lightness = 1,
                           auto_subscript = TRUE),
        rplot = list(outfile = "",
                     addgrid = TRUE),
        tikz = list(outfile = "",
                    cex = 1.3,
                    standalone = FALSE),
        svg = list(outfile = "",
                   stroke_width = 2L,
                   font_size = 20L,
                   idx_font_size = 15L,
                   dy = 5L,
                   font_family = "Latin Modern Math, arial, Arial, sans",
                   standalone = FALSE)
        )

Value

NULL, invisible

Arguments

model

A character vector specifying the model in lavaan syntax or a list (or data.frame) with at least members lhs, op, rhs, label and fixed or a fitted lavaan object (in which case the ParTable object is extracted and column est is used as value to show). Should be NULL if infile is given.

infile

A character string specifying the file that contains the model syntax.

varlv

A logical indicating that the (residual) variance of a variable should be plotted as a separate latent variable (with a smaller circle than ordinary latent variables). In this case, a covariance between two such variables is plotted as a covariance between their variance latent variables.

placenodes

optional list with members nodename = c(row, column), row and column don't have to be integers.

edgelabelsbelow

optional list with members c(nodename1, nodename2).

group_covar_indicators

logical, should items with indicators which have an explicit covariance link be placed in the same group, i.e. forced to be on the same side of the diagram?

common_opts

options common to the three types of generated plots.

rplot

options for creating Rplot, see lav_plotinfo_rgraph.

tikz

options for creating code for tikz plot, see lav_plotinfo_tikzcode.

svg

options for creating code for svg plot, see lav_plotinfo_svgcode.

Details

If rplot is specified, or if neither tikz nor svg is specified, an R plot is generated, and stored in a png file if the outfile member of rplot is set. If tikz is specified, the code for a tikz diagram is stored in the specified outfile; the same applies to svg.

The lav_plot command tries to create a nice plot from the input model, but the variable names should be kept short, and the nodes in the plot may sometimes need to be rearranged. As an example, the (slightly modified) example of the sem function in lavaan produces the first plot shown below. Using the placenodes argument produces the second plot.

More details on the parameters can be found in the help for the lav_... functions.

See Also

lav_model_plotinfo, lav_plotinfo_positions, lav_plotinfo_rgraph, lav_plotinfo_tikzcode, lav_plotinfo_svgcode