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Set the Sizes of Selected Nodes

Source: R/set_node_size.R
set_node_size.Rd

Set the sizes of selected nodes.

Usage

set_node_size(semPaths_plot, values = NULL)

set_node_width(semPaths_plot, values = NULL)

set_node_height(semPaths_plot, values = NULL)

set_node_shape(semPaths_plot, values = NULL)

Arguments

semPaths_plot

A qgraph::qgraph object generated by semPlot::semPaths, or a similar qgraph object modified by other semptools functions.

values

A named vector or a list of named list. See the Details section on how to set this argument.

Value

A qgraph::qgraph based on the original one, with the sizes of selected nodes changed.

Details

Modify a qgraph::qgraph object generated by semPlot::semPaths and change the sizes of selected nodes.

These arguments can be set in three ways.

For a named vector, the name of an element should be the nodes for which the attributes are to be changed. The names need to the displayed names if plotted, which may be different from the names in the model.

For example, to change the size-related attribute of x, the name should be "x". Therefore, c("y" = 2, "x" = 3) changes the selected attributes of the nodes y and x to 2 and 3, respectively.

For a list of named lists, each named list should have two named values: node and new_value. The size-related attribute of node will changed based on new_value.

The second approach is no longer recommended, though kept for backward compatibility.

The last approach is setting the size-related attribute to a one-element vector with no name. All nodes in plot will then have their sizes changed based on this value.

Shape, Width, and Height

How width and height are used depends on shape. The supported values of shape depends on qgraph. Common values are are "square", "rectangle", "circle", "rectangle", and "ellipse". For "square" and "circle", only the value of width is used to determine the size of the node.

Examples

mod_pa <-
  'x1 ~~ x2
   x3 ~  x1 + x2
   x4 ~  x1 + x3
  '
fit_pa <- lavaan::sem(mod_pa, pa_example)
m <- matrix(c("x1",   NA,   NA,
                NA, "x3", "x4",
              "x2",   NA,   NA), byrow = TRUE, 3, 3)
p_pa <- semPlot::semPaths(fit_pa, whatLabels="est",
            style = "ram",
            nCharNodes = 0, nCharEdges = 0,
            layout = m)


p_pa2v <- set_node_size(p_pa, c(x1 = 5, x2 = 10))
plot(p_pa2v)


p_pa2l <- set_node_shape(p_pa, "circle")
plot(p_pa2l)