Error(s) in re-building vignettes:
  ...
--- re-building ‘DRomics_vignette.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch5-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 29807 bytes
Input file size = 29921 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20387
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20387

Output IDAT size = 20387 bytes (9420 bytes decrease)
Output file size = 20465 bytes (9456 bytes = 31.60% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch7-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 31545 bytes
Input file size = 31659 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 23736
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 23736

Output IDAT size = 23736 bytes (7809 bytes decrease)
Output file size = 23814 bytes (7845 bytes = 24.78% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch9-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 23824 bytes
Input file size = 23926 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 18004
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 18004

Output IDAT size = 18004 bytes (5820 bytes decrease)
Output file size = 18082 bytes (5844 bytes = 24.43% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch11-1.png
672x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 9081 bytes
Input file size = 9951 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8011
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 8001
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 8001

Output IDAT size = 8001 bytes (1080 bytes decrease)
Output file size = 8079 bytes (1872 bytes = 18.81% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch12-1.png
672x288 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 8993 bytes
Input file size = 9860 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 7856
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 7849
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 7849

Output IDAT size = 7849 bytes (1144 bytes decrease)
Output file size = 7927 bytes (1933 bytes = 19.60% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch13-1.png
672x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 17302 bytes
Input file size = 18184 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 15959
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 15959

Output IDAT size = 15959 bytes (1343 bytes decrease)
Output file size = 16037 bytes (2147 bytes = 11.81% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch15-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 32353 bytes
Input file size = 32467 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 27415
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 27415

Output IDAT size = 27415 bytes (4938 bytes decrease)
Output file size = 27493 bytes (4974 bytes = 15.32% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/DRomics.Rcheck/vign_test/DRomics/vignettes/DRomics_vignette_files/figure-html/ch15-2.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 16899 bytes
Input file size = 17001 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 15223
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 15212
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 15212

Output IDAT size = 15212 bytes (1687 bytes decrease)
Output file size = 15290 bytes (1711 bytes = 10.06% decrease)


Quitting from lines 447-452 [ch16] (DRomics_vignette.Rmd)
Error: processing vignette 'DRomics_vignette.Rmd' failed with diagnostics:
could not find function "ComBat_seq"
--- failed re-building ‘DRomics_vignette.Rmd’

SUMMARY: processing the following file failed:
  ‘DRomics_vignette.Rmd’

Error: Vignette re-building failed.
Execution halted