Create the layout matrix from a list of coordinates for semPaths.
Each node in the matrix is specified by this form:
name = c(x, y). The
name is the node label, and the vector is the
position of the node. The first element is the
x position, and
the second element is the
y position, measured from the top left
corner. The size of the grid is determined automatically. For a
grid of n rows and m columns, the top left cell is specified by
c(1, 1), and the bottom right cell is specified by
A layout matrix for the layout argument of
The layout argument in
semPlot::semPaths() accepts a
matrix with node labels as the elements, and
NA for empty cells.
This function allows user to create the matrix using a list of
coordinates for the node labels.
# Suppose this is the layout to be created: m0 <- matrix(c("x1", NA, NA, NA, "x2", "x3", NA, NA, NA, "x4", NA, "x5"), byrow = TRUE, 3, 4) # This call will create the same matrix. m1 <- layout_matrix(x1 = c(1, 1), x2 = c(2, 1), x3 = c(2, 2), x4 = c(3, 2), x5 = c(3, 4)) #The two matrices should be identical. m0 == m1 #> [,1] [,2] [,3] [,4] #> [1,] TRUE NA NA NA #> [2,] TRUE TRUE NA NA #> [3,] NA TRUE NA TRUE