tests/testthat/_snaps/basis.md

In gratia: Graceful 'ggplot'-Based Graphics and Other Functions for GAMs Fitted Using 'mgcv'

basis() throws error if n coefs is wrong

Code
  basis(s(x1), data = su_eg1, coefficients = 1:3)
Condition
  Error:
  ! Incorrect number of `coefficients`
  x Provided 3 coefficients for 10 basis functions.

basis() works with supplied coefs

Code
  withr::with_seed(seed = 2, basis(s(x1), data = su_eg1, coefficients = rnorm(10,
    sd = 4)))
Output
  # A tibble: 10,000 x 6
     .smooth .type .by   .bf    .value    x1
     <chr>   <chr> <chr> <fct>   <dbl> <dbl>
   1 s(x1)   TPRS  <NA>  1      1.86   0.531
   2 s(x1)   TPRS  <NA>  2     -0.243  0.531
   3 s(x1)   TPRS  <NA>  3      1.13   0.531
   4 s(x1)   TPRS  <NA>  4      0.323  0.531
   5 s(x1)   TPRS  <NA>  5      0.104  0.531
   6 s(x1)   TPRS  <NA>  6     -0.198  0.531
   7 s(x1)   TPRS  <NA>  7     -0.158  0.531
   8 s(x1)   TPRS  <NA>  8     -0.109  0.531
   9 s(x1)   TPRS  <NA>  9      7.94   0.531
  10 s(x1)   TPRS  <NA>  10    -0.0759 0.531
  # i 9,990 more rows

gratia documentation built on Feb. 7, 2026, 9:06 a.m.