Error in retrieving help of aov_* in RStudio

[psychelzh]

When typing aov_ in RStudio the following window pops up, suggesting there is an error in help document.

Error messages:

Error in substring(html, match + 6, match + attr(match, "match.length") -  : 
  invalid multibyte string at '<98>*<2a>*鈥<99> 0.001 鈥<98>**鈥<99> 0.01 鈥<98>*鈥<99> 0.05 鈥<98>+鈥<99> 0.1 鈥<98> 鈥<99> 1

# "numeric" variables are per default converted to factors (as long as factorize = TRUE):
obk.long$hour2 &lt;- as.numeric(as.character(obk.long$hour))

# gives same results as calls before
aov_car(value ~ treatment * gender + Error(id/phase*hour2), 
        data = obk.long, observed = c("gender"))


# ANCOVA: adding a covariate (necessary to set factorize = FALSE)
aov_car(value ~ treatment * gender + age + Error(id/(phase*hour)), 
        data = obk.long, observed = c("gender", "age"), factorize = FALSE)

aov_4(value ~ treatment * gender + age + (phase*hour|id), 
        data = obk.long, observed = c("gender", "age"), factorize = FALSE)

aov_ez("id", "value", obk.long, between = c("treatment", "gender"), 
        within = c("phase", "hour"), covariate = "age", 
        observed = c("gender", "age"), factorize = FALSE)


# aggregating over one within-su

Session Information:

sessioninfo::session_info()
#> - Session info ----------------------------------------------------------
#>  setting  value                         
#>  version  R version 3.5.3 (2019-03-11)  
#>  os       Windows 10 x64                
#>  system   x86_64, mingw32               
#>  ui       RTerm                         
#>  language (EN)                          
#>  collate  Chinese (Simplified)_China.936
#>  ctype    Chinese (Simplified)_China.936
#>  tz       Asia/Taipei                   
#>  date     2019-04-08                    
#> 
#> - Packages --------------------------------------------------------------
#>  package     * version date       lib source        
#>  assertthat    0.2.1   2019-03-21 [1] CRAN (R 3.5.3)
#>  cli           1.1.0   2019-03-19 [1] CRAN (R 3.5.3)
#>  crayon        1.3.4   2017-09-16 [1] CRAN (R 3.5.0)
#>  digest        0.6.18  2018-10-10 [1] CRAN (R 3.5.1)
#>  evaluate      0.13    2019-02-12 [1] CRAN (R 3.5.2)
#>  highr         0.8     2019-03-20 [1] CRAN (R 3.5.3)
#>  htmltools     0.3.6   2017-04-28 [1] CRAN (R 3.5.0)
#>  knitr         1.22    2019-03-08 [1] CRAN (R 3.5.3)
#>  magrittr      1.5     2014-11-22 [1] CRAN (R 3.5.0)
#>  Rcpp          1.0.1   2019-03-17 [1] CRAN (R 3.5.3)
#>  rmarkdown     1.12    2019-03-14 [1] CRAN (R 3.5.2)
#>  sessioninfo   1.1.1   2018-11-05 [1] CRAN (R 3.5.1)
#>  stringi       1.4.3   2019-03-12 [1] CRAN (R 3.5.2)
#>  stringr       1.4.0   2019-02-10 [1] CRAN (R 3.5.2)
#>  withr         2.1.2   2018-03-15 [1] CRAN (R 3.5.0)
#>  xfun          0.6     2019-04-02 [1] CRAN (R 3.5.3)
#>  yaml          2.2.0   2018-07-25 [1] CRAN (R 3.5.1)
#> 
#> [1] C:/Users/liang/Documents/R/win-library/3.5
#> [2] C:/Program Files/R/R-3.5.3/library

^{Created on 2019-04-08 by the reprex package (v0.2.1)}

[psychelzh]

I suspect that there might a document file encoding not supported.

[singmann]

Sorry for the slow reply, but I have now attempted to address this by changing the problematic line by hand.

It is changed now in the development version. Can you let me know if the problem still appears after installing it?

[psychelzh]

Now the error message is:

Error in substring(html, match + 6, match + attr(match, "match.length") -  : 
  invalid multibyte string at '<99> <61>nd 'data.frame':	15 obs. of  6 variables:
#  $ aov        :List of 5
#  $ Anova      :List of 14
#  $ lm         :List of 13
#  $ data       :List of 3

obk_anova$Anova
## Type II Repeated Measures MANOVA Tests: Pillai test statistic
##                             Df test stat approx F num Df den Df       Pr(&gt;F)    
## (Intercept)                  1     0.970      318      1     10 0.0000000065 ***
## treatment                    2     0.481        5      2     10      0.03769 *  
## gender                       1     0.204        3      1     10      0.14097    
## treatment:gender             2     0.364        3      2     10      0.10447    
## phase                        1     0.851       26      2      9      0.00019 ***
## treatment:phase              2     0.685        3      4     20      0.06674 .  
## gender:phase                 1     0.043        0      2      9      0.82000    
## treatment:gender:phase       2     0.311
Error in substring(html, match + 6, match + attr(match, "match.length") -  : 
  invalid multibyte string at '<99> <61>nd 'data.frame':	15 obs. of  6 variables:
#  $ aov        :List of 5
#  $ Anova      :List of 14
#  $ lm         :List of 13
#  $ data       :List of 3

obk_anova$Anova
## Type II Repeated Measures MANOVA Tests: Pillai test statistic
##                             Df test stat approx F num Df den Df       Pr(&gt;F)    
## (Intercept)                  1     0.970      318      1     10 0.0000000065 ***
## treatment                    2     0.481        5      2     10      0.03769 *  
## gender                       1     0.204        3      1     10      0.14097    
## treatment:gender             2     0.364        3      2     10      0.10447    
## phase                        1     0.851       26      2      9      0.00019 ***
## treatment:phase              2     0.685        3      4     20      0.06674 .  
## gender:phase                 1     0.043        0      2      9      0.82000    
## treatment:gender:phase       2     0.311

[singmann]

Does the same error occur for ?mixed, ?afex_plot, ?`afex-package`, md_12.1, and ?sk2011.2?

Does it also occur with the latest version of RStudio? https://www.rstudio.com/products/rstudio/download/preview/

I understand that this is an annoying problem, but it does not seem to be an optimal solution for me to remove all non-ASCII characters if there is another way.

[psychelzh]

The same error occurs for ?mixed, but not for the rest.

[singmann]

Can you try again? I removed those characters.

[psychelzh]

This time is this:

[singmann]

That seems to be an installation error. Can you restart R and reinstall afex and check again?

[psychelzh]

Done! Seemingly there is no more error message now. Thank you very much!

[psychelzh]

BTW, how about these messages when loading? Is it okay?

Registered S3 methods overwritten by 'car':
  method                          from
  influence.merMod                lme4
  cooks.distance.influence.merMod lme4
  dfbeta.influence.merMod         lme4
  dfbetas.influence.merMod        lme4

[singmann]

This is neither an error nor a warning. Further, afex is not responsible for that directly.

[psychelzh]

Yeah, it is from car package. I think it is okay.