Error(s) in re-building vignettes:
  ...
--- re-building ‘introduction.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/eva.Rcheck/vign_test/eva/vignettes/introduction_files/figure-html/shape-1.png
1344x960 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 35644 bytes
Input file size = 35770 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 35032
  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 = 32387
  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 = 32387

Output IDAT size = 32387 bytes (3257 bytes decrease)
Output file size = 32465 bytes (3305 bytes = 9.24% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/eva.Rcheck/vign_test/eva/vignettes/introduction_files/figure-html/shape-2.png
1344x960 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 35216 bytes
Input file size = 35342 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 33930
  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 = 31952
  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 = 31952

Output IDAT size = 31952 bytes (3264 bytes decrease)
Output file size = 32030 bytes (3312 bytes = 9.37% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/eva.Rcheck/vign_test/eva/vignettes/introduction_files/figure-html/returnlevel-1.png
1536x2304 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 121936 bytes
Input file size = 122182 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 101167
  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 = 101167

Output IDAT size = 101167 bytes (20769 bytes decrease)
Output file size = 101245 bytes (20937 bytes = 17.14% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/eva.Rcheck/vign_test/eva/vignettes/introduction_files/figure-html/nonstatfit1-1.png
1344x960 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 30799 bytes
Input file size = 31693 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28821
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 28686
  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 = 28686

Output IDAT size = 28686 bytes (2113 bytes decrease)
Output file size = 28764 bytes (2929 bytes = 9.24% decrease)


Quitting from lines 197-209 [rfa_example1] (introduction.Rmd)
Error: processing vignette 'introduction.Rmd' failed with diagnostics:
could not find function "rmaxstab"
--- failed re-building ‘introduction.Rmd’

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

Error: Vignette re-building failed.
Execution halted