def_sym | R Documentation |

Define (invisibly) caracas symbols in global environment

Define symbol for components in vector

def_sym(..., charvec = NULL, warn = FALSE, env = parent.frame()) def_sym_vec(x, env = parent.frame())

`...` |
Names for new symbols, also supports non-standard evaluation |

`charvec` |
Take each element in this character vector and define as caracas symbols |

`warn` |
Warn if existing variable names are overwritten |

`env` |
The environment in which the assignment is made. |

`x` |
Character vector. |

Names of declared variables (invisibly)

`symbol()`

, `as_sym()`

if (has_sympy()) { ls() def_sym(n1, n2, n3) ls() def_sym("x1", "x2", "x3") ls() def_sym("x1", "x2", "x3", warn = TRUE) ls() def_sym(i, j, charvec = c("x", "y")) ls() } if (has_sympy()) { def_sym(z1, z2, z3) u <- paste0("u", seq_len(3)) ## Creates symbols u1, u2, u3 and binds to names u1, u2, u3 in R. def_sym_vec(u) ## Same as (but easier than) def_sym(u1, u2, u3) ## Notice: this creates matrix [u1, u2, u3] as_sym(u) }

caracas documentation built on Feb. 16, 2023, 8:32 p.m.

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