- using R Under development (unstable) (2026-02-11 r89402)
- using platform: x86_64-pc-linux-gnu
- R was compiled by
gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
GNU Fortran (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
- running under: Fedora Linux 42 (Workstation Edition)
- using session charset: UTF-8
* current time: 2026-02-11 13:17:54 UTC
- using option ‘--no-stop-on-test-error’
- checking for file ‘npreg/DESCRIPTION’ ... OK
- checking extension type ... Package
- this is package ‘npreg’ version ‘1.1.0’
- checking package namespace information ... OK
- checking package dependencies ... OK
- checking if this is a source package ... OK
- checking if there is a namespace ... OK
- checking for executable files ... OK
- checking for hidden files and directories ... OK
- checking for portable file names ... OK
- checking for sufficient/correct file permissions ... OK
- checking whether package ‘npreg’ can be installed ... [20s/21s] OK
See the install log for details.
- checking package directory ... OK
- checking DESCRIPTION meta-information ... OK
- checking top-level files ... OK
- checking for left-over files ... OK
- checking index information ... OK
- checking package subdirectories ... OK
- checking code files for non-ASCII characters ... OK
- checking R files for syntax errors ... OK
- checking whether the package can be loaded ... OK
- checking whether the package can be loaded with stated dependencies ... OK
- checking whether the package can be unloaded cleanly ... OK
- checking whether the namespace can be loaded with stated dependencies ... OK
- checking whether the namespace can be unloaded cleanly ... OK
- checking loading without being on the library search path ... OK
- checking whether startup messages can be suppressed ... OK
- checking use of S3 registration ... OK
- checking dependencies in R code ... OK
- checking S3 generic/method consistency ... OK
- checking replacement functions ... OK
- checking foreign function calls ... OK
- checking R code for possible problems ... [33s/34s] OK
- checking Rd files ... OK
- checking Rd metadata ... OK
- checking Rd line widths ... OK
- checking Rd cross-references ... OK
- checking for missing documentation entries ... OK
- checking for code/documentation mismatches ... OK
- checking Rd \usage sections ... OK
- checking Rd contents ... OK
- checking for unstated dependencies in examples ... OK
- checking examples ... ERROR
Running examples in ‘npreg-Ex.R’ failed
The error most likely occurred in:
> ### Name: smooth.influence.measures
> ### Title: Nonparametric Regression Deletion Diagnostics
> ### Aliases: smooth.influence.measures rstandard.ss rstandard.sm
> ### rstandard.gsm rstudent.ss rstudent.sm rstudent.gsm dfbeta.ss
> ### dfbeta.sm dfbeta.gsm dfbetas.ss dfbetas.sm dfbetas.gsm cov.ratio
> ### cooks.distance.ss cooks.distance.sm cooks.distance.gsm hatvalues.ss
> ### hatvalues.sm hatvalues.gsm
>
> ### ** Examples
>
> # generate data
> set.seed(1)
> n <- 100
> x <- seq(0, 1, length.out = n)
> fx <- 2 + 3 * x + sin(2 * pi * x)
> y <- fx + rnorm(n, sd = 0.5)
>
> # fit models
> mod.ss <- ss(x, y, nknots = 10)
> mod.sm <- sm(y ~ x, knots = 10)
> mod.gsm <- gsm(y ~ x, knots = 10)
>
> # calculate influence
> infl.ss <- smooth.influence.measures(mod.ss)
Error in UseMethod("dffits") :
no applicable method for 'dffits' applied to an object of class "ss"
Calls: smooth.influence.measures -> cbind -> dffits
Execution halted
- checking PDF version of manual ... OK
- checking HTML version of manual ... OK
- checking for non-standard things in the check directory ... OK
- checking for detritus in the temp directory ... OK
- DONE
Status: 1 ERROR