* using log directory 'd:/RCompile/CRANincoming/R-devel/OPCreg.Rcheck'
* using R Under development (unstable) (2025-02-14 r87718 ucrt)
* using platform: x86_64-w64-mingw32
* R was compiled by
    gcc.exe (GCC) 13.3.0
    GNU Fortran (GCC) 13.3.0
* running under: Windows Server 2022 x64 (build 20348)
* using session charset: UTF-8
* checking for file 'OPCreg/DESCRIPTION' ... OK
* this is package 'OPCreg' version '0.1'
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [43s] NOTE
Maintainer: 'Guangbao Guo <ggb11111111@163.com>'

New submission

Possibly misspelled words in DESCRIPTION:
  Guo (9:143)
* 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 hidden files and directories ... OK
* checking for portable file names ... OK
* checking whether package 'OPCreg' can be installed ... WARNING
Found the following significant warnings:
  Warning: file 'IPCR.R' is invalid UTF-8
  Warning: file 'PCR.R' is invalid UTF-8
  Warning: file 'PPCR.R' is invalid UTF-8
  Warning: file 'SPCR.R' is invalid UTF-8
  Warning: invalidly encoded .R file(s)
See 'd:/RCompile/CRANincoming/R-devel/OPCreg.Rcheck/00install.out' for details.
* checking installed package size ... OK
* checking package directory ... OK
* checking for future file timestamps ... OK
* checking DESCRIPTION meta-information ... NOTE
Author field differs from that derived from Authors@R
  Author:    'Guangbao Guo [aut, cre], Chunjie Wei [aut]'
  Authors@R: 'Guangbao Guo [aut, cre] (ORCID: <https://orcid.org/0000-0002-4115-6218>), Chunjie Wei [aut]'

* 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 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 ... NOTE
IPCR: no visible global function definition for 'lm'
IPCR: no visible global function definition for 'coef'
IPCR: no visible binding for global variable 'B'
PCR: no visible global function definition for 'lm'
PCR: no visible global function definition for 'coef'
PCR: no visible binding for global variable 'B'
PPCR: no visible global function definition for 'rnorm'
PPCR: no visible global function definition for 'lm'
PPCR: no visible global function definition for 'coef'
SPCR: no visible global function definition for 'lm'
SPCR: no visible global function definition for 'coef'
Undefined global functions or variables:
  B coef lm rnorm
Consider adding
  importFrom("stats", "coef", "lm", "rnorm")
to your NAMESPACE file.
* 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 ... WARNING
Codoc mismatches from Rd file 'IPCR.Rd':
IPCR
  Code: function(data, eta = 0.0035, m = 3, alpha = 0.05)
  Docs: function(data, m, eta)
  Argument names in code not in docs:
    alpha
  Mismatches in argument names:
    Position: 2 Code: eta Docs: m
    Position: 3 Code: m Docs: eta
  Mismatches in argument default values:
    Name: 'eta' Code: 0.0035 Docs: 
    Name: 'm' Code: 3 Docs: 

* checking Rd \usage sections ... WARNING
Documented arguments not in \usage in Rd file 'IPCR.Rd':
  'alpha'

Functions with \usage entries need to have the appropriate \alias
entries, and all their arguments documented.
The \usage entries must correspond to syntactically valid R code.
See chapter 'Writing R documentation files' in the 'Writing R
Extensions' manual.
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... WARNING
'library' or 'require' call not declared from: 'matrixcalc'
* checking examples ... ERROR
Running examples in 'OPCreg-Ex.R' failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: IPCR
> ### Title: Incremental Principal Component Regression for Online Datasets
> ### Aliases: IPCR
> 
> ### ** Examples
> 
> library(MASS)
> library(matrixcalc)
Error in library(matrixcalc) : there is no package called 'matrixcalc'
Execution halted
* checking PDF version of manual ... [20s] OK
* checking HTML version of manual ... OK
* DONE
Status: 1 ERROR, 4 WARNINGs, 3 NOTEs