[R-pkg-devel] Private S3 Method not Found

[Richard M. Heiberger]

Please be consistent with the latex() function in the Hmisc package.  For
example, for an array x, latex (x) produces a complete latex table
environment.  See the ?latex helpfile for details.

Rich

On Mon, Feb 17, 2020 at 10:07 <bill using denney.ws> wrote:

> Hello,
>
>
>
> I'm working on a function in a package that will provide an exported
> function that will convert formula to LaTeX equations.  For that, it
> recursively goes through the formula converting objects of class "formula",
> "call", "name", and "(" to LaTeX.
>
>
>
> I have a private S3 generic function that I'm using for the conversion, but
> for some reason, the generic is not detected, and checking the package
> fails
> for that reason
> (https://travis-ci.org/billdenney/bsd.report/jobs/651510333):
>
>
>
> no applicable method for 'knit_print_helper_formula' applied to an object
> of
> class "name"
>
> Backtrace:
>
>   1. testthat::expect_equal(...)
>
>   4. bsd.report:::knit_print.formula(a ~ b(c))
>
>   6. bsd.report:::knit_print_helper_formula.formula(x, ..., replacements =
> replacements)
>
>   9. bsd.report:::knit_print_helper_formula.call(x[[3]], ...)
>
> 10. bsd.report:::knit_print_helper_formula.function_call(x, ...)
>
> 11. base::sapply(...)
>
> 12. base::lapply(X = X, FUN = FUN, ...)
>
> 13. bsd.report:::FUN(X[[i]], ...)
>
>
>
> But, there is a knit_print_helper_formula.name function call defined
> (
> https://github.com/billdenney/bsd.report/blob/master/R/knit_print.formula.R
> #L60-L79
> <https://github.com/billdenney/bsd.report/blob/master/R/knit_print.formula.R#L60-L79>
> ):
>
>
>
> knit_print_helper_formula <- function(x, ...) {
>
>   UseMethod("knit_print_helper_formula")
>
> }
>
>
>
> # Some other methods
>
>
>
> knit_print_helper_formula.name <- function(x, ...) {
>
> # Function body
>
> }
>
>
>
> Does anyone know why the S3 method for name class objects is not found when
> checking the package?
>
>
>
> Thanks,
>
>
>
> Bill
>
>
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>
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