Variables are detected as a character followed by a number of either: character, number or underscore.

as_sym(x, declare_symbols = TRUE)

Arguments

x R object to convert to a symbol declare detected symbols automatically

Details

Default is to declare used variables. Alternatively, the user must declare them first, e.g. by symbol().

Note that matrices can be defined by specifying a Python matrix, see below in examples.

Examples

if (has_sympy()) {
x <- symbol("x")
A <- matrix(c("x", 0, 0, "2*x"), 2, 2)
A
B <- as_sym(A)
B
2*B
dim(B)
sqrt(B)
D <- as_sym("[[1, 4, 5], [-5, 8, 9]]")
D
}
#> [caracas]: ⎡1   4  5⎤
#>            ⎢        ⎥
#>            ⎣-5  8  9⎦