Error(s) in re-building vignettes:
  ...
--- re-building ‘Introduction_to_the_cf_R_package.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/cf_grid-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 41461 bytes
Input file size = 41599 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28347
  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 = 28347

Output IDAT size = 28347 bytes (13114 bytes decrease)
Output file size = 28425 bytes (13174 bytes = 31.67% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/cf_grid bar-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 40003 bytes
Input file size = 40129 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 29337
  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 = 29337

Output IDAT size = 29337 bytes (10666 bytes decrease)
Output file size = 29415 bytes (10714 bytes = 26.70% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-1-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 73076 bytes
Input file size = 73250 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 50943
  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 = 50943

Output IDAT size = 50943 bytes (22133 bytes decrease)
Output file size = 51021 bytes (22229 bytes = 30.35% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-2-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 41461 bytes
Input file size = 41599 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28347
  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 = 28347

Output IDAT size = 28347 bytes (13114 bytes decrease)
Output file size = 28425 bytes (13174 bytes = 31.67% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/cf_data-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 27410 bytes
Input file size = 27524 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 17973
  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 = 17973

Output IDAT size = 17973 bytes (9437 bytes decrease)
Output file size = 18051 bytes (9473 bytes = 34.42% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-3-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 73277 bytes
Input file size = 73451 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 51079
  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 = 51079

Output IDAT size = 51079 bytes (22198 bytes decrease)
Output file size = 51157 bytes (22294 bytes = 30.35% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-4-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 73301 bytes
Input file size = 73475 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 51084
  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 = 51084

Output IDAT size = 51084 bytes (22217 bytes decrease)
Output file size = 51162 bytes (22313 bytes = 30.37% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-5-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 79854 bytes
Input file size = 80040 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 55661
  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 = 55661

Output IDAT size = 55661 bytes (24193 bytes decrease)
Output file size = 55739 bytes (24301 bytes = 30.36% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/cf for func-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 73076 bytes
Input file size = 73250 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 50943
  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 = 50943

Output IDAT size = 50943 bytes (22133 bytes decrease)
Output file size = 51021 bytes (22229 bytes = 30.35% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/cf for data-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 27410 bytes
Input file size = 27524 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 17973
  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 = 17973

Output IDAT size = 17973 bytes (9437 bytes decrease)
Output file size = 18051 bytes (9473 bytes = 34.42% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-6-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 26344 bytes
Input file size = 26458 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20309
  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 = 20309

Output IDAT size = 20309 bytes (6035 bytes decrease)
Output file size = 20387 bytes (6071 bytes = 22.95% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ContourFunctions.Rcheck/vign_test/ContourFunctions/vignettes/Introduction_to_the_cf_R_package_files/figure-html/unnamed-chunk-7-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 20097 bytes
Input file size = 20199 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 18066
  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 = 18066

Output IDAT size = 18066 bytes (2031 bytes decrease)
Output file size = 18144 bytes (2055 bytes = 10.17% decrease)


Quitting from lines 171-173 [unnamed-chunk-8] (Introduction_to_the_cf_R_package.Rmd)
Error: processing vignette 'Introduction_to_the_cf_R_package.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘Introduction_to_the_cf_R_package.Rmd’

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

Error: Vignette re-building failed.
Execution halted