lav_plotinfo_svgcode: Creates code to show a diagram in svg format
In lavaan: Latent Variable Analysis

lav_plotinfo_svgcode

R Documentation

Creates code to show a diagram in svg format

Description

Creates svg code to show a diagram of the model.

Usage

lav_plotinfo_svgcode(plotinfo,
                     outfile = "",
                     sloped_labels = TRUE,
                     standalone = FALSE,
                     stroke_width = 2L,
                     font_size = 20L,
                     idx_font_size = 15L,
                     dy = 5L,
                     mlovcolors = c("lightgreen", "lightblue"),
                     lightness= 1,
                     font_family = "Latin Modern Math, arial, Arial, sans",
                     italic = TRUE,
                     auto_subscript = TRUE
                     )

Arguments

`plotinfo`	A plotinfo structure as returned from `lav_plotinfo_positions`.
`outfile`	A connection or a character string, the file to store the code.
`sloped_labels`	logical, sloped labels for the edges.
`standalone`	logical, should code be added to produce an html file with the svg embedded in it? If FALSE (the default), the outfile (if specified) must have the file extension 'svg'; if TRUE, the file extension must be 'htm' or 'html'.
`stroke_width`	Value for stroke-width parameter in svg.
`font_size`	An integer specifying the normal font size to use.
`idx_font_size`	An integer specifying the font size to use for a subscript.
`dy`	An integer specifying the distance by which to move the baseline of the subscript.
`mlovcolors`	Array of two colors for distinguishing ov nodes with the same name across the levels of a multilevel model.
`lightness`	A scalar factor to modify the distances between nodes.
`font_family`	Fonts to be tried for rendering the labels. The first one, Latin Modern Math, is close to the default font used in tikz for mathematical expressions and can be downloaded from CTAN.
`italic`	Should labels be in an italic font? If FALSE, the labels are shown in mathrm font.
`auto_subscript`	Logical, see `lav_label_code`.

Value

NULL (invisible)

Examples

model <- 'alpha  =~ x1 + x2 + x3       # latent variable
          beta <~ x4 + x5 + x6         # composite
          gamma =~ x7 + x8 + x9        # latent variable
          Xi =~ x10 + x11 + x12 + x13  # latent variable
          # regressions
          Xi ~ v * alpha + t * beta + 1
          alpha ~ yy * Theta1 + tt * beta + ss * gamma
          '
test <- lav_model_plotinfo(model)
test <- lav_plotinfo_positions(test)
lav_plotinfo_svgcode(test) # no file given, so output to R console
modelml <- '
        level: 1
        fw =~ 1*y_1 + y_2 + y_3 + y_5
        level: 2
        fb =~ 1*y_1 + y_2 + y_3 + y_4
        y_2 ~~ cv24 * y_4
  '
testml <- lav_model_plotinfo(modelml)
testml <- lav_plotinfo_positions(testml)
# in the line hereunder no file is given, so output to R console
lav_plotinfo_svgcode(testml, sloped_labels = FALSE, standalone = TRUE,
            auto_subscript = FALSE)
## Not run: 
# example creating html file with the above diagrams
zz <- file("demosvg.html", open="w")
writeLines(c(
  '<!DOCTYPE html>',
  '<html>',
  '<body>',
  '<h2>SVG diagrams created by lav_plot R package</h2>'),
  zz)
lav_plotinfo_svgcode(test, outfile = "temp.svg")
tmp <- readLines("tmp.svg")
writeLines(tmp, zz)
writeLines("<br />", zz)
lav_plotinfo_svgcode(testml, outfile = "temp.svg", sloped_labels = FALSE,
             standalone = TRUE)
tmp <- readLines("tmp.svg")
writeLines(tmp, zz)
writeLines(c("</body>", "</html>"), zz)
close(zz)
browseURL("demosvg.html")

## End(Not run)

lavaan documentation built on Oct. 8, 2026, 5:06 p.m.