Error(s) in re-building vignettes:
  ...
--- re-building ‘black-figures.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/black-figures_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 156 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1308 bytes
Input file size = 1866 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1046
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1020
  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 = 1020

Output IDAT size = 1020 bytes (288 bytes decrease)
Output file size = 1098 bytes (768 bytes = 41.16% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/black-figures_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 209 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2523 bytes
Input file size = 3240 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2078
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2055
  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 = 2055

Output IDAT size = 2055 bytes (468 bytes decrease)
Output file size = 2133 bytes (1107 bytes = 34.17% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/black-figures_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 8 bits/pixel, 182 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2450 bytes
Input file size = 3086 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1991
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1983
  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 = 1983

Output IDAT size = 1983 bytes (467 bytes decrease)
Output file size = 2061 bytes (1025 bytes = 33.21% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/black-figures_files/figure-html/unnamed-chunk-5-1.png
288x288 pixels, 8 bits/pixel, 174 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1806 bytes
Input file size = 2418 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1368
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1347
  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 = 1347

Output IDAT size = 1347 bytes (459 bytes decrease)
Output file size = 1425 bytes (993 bytes = 41.07% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/black-figures_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 8 bits/pixel, 136 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1847 bytes
Input file size = 2345 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1459
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1438
  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 = 1438

Output IDAT size = 1438 bytes (409 bytes decrease)
Output file size = 1516 bytes (829 bytes = 35.35% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/black-figures_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 155 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2038 bytes
Input file size = 2593 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1476
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1449
  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 = 1449

Output IDAT size = 1449 bytes (589 bytes decrease)
Output file size = 1527 bytes (1066 bytes = 41.11% decrease)

--- finished re-building ‘black-figures.Rmd’

--- re-building ‘circle-sections.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 214 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2557 bytes
Input file size = 3289 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2228
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2194
  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 = 2194

Output IDAT size = 2194 bytes (363 bytes decrease)
Output file size = 2272 bytes (1017 bytes = 30.92% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 218 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3148 bytes
Input file size = 3892 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2724
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2639
  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 = 2639

Output IDAT size = 2639 bytes (509 bytes decrease)
Output file size = 2717 bytes (1175 bytes = 30.19% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 8 bits/pixel, 212 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4709 bytes
Input file size = 5435 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4151
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 4007
  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 = 4007

Output IDAT size = 4007 bytes (702 bytes decrease)
Output file size = 4085 bytes (1350 bytes = 24.84% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-5-1.png
288x288 pixels, 8 bits/pixel, 240 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3318 bytes
Input file size = 4128 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2785
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2725
  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 = 2725

Output IDAT size = 2725 bytes (593 bytes decrease)
Output file size = 2803 bytes (1325 bytes = 32.10% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 8 bits/pixel, 240 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3491 bytes
Input file size = 4301 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2938
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2862
  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 = 2862

Output IDAT size = 2862 bytes (629 bytes decrease)
Output file size = 2940 bytes (1361 bytes = 31.64% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 243 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 5278 bytes
Input file size = 6097 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4455
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 4295
  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 = 4295

Output IDAT size = 4295 bytes (983 bytes decrease)
Output file size = 4373 bytes (1724 bytes = 28.28% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-8-1.png
288x288 pixels, 8 bits/pixel, 237 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3395 bytes
Input file size = 4196 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3017
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2935
  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 = 2935

Output IDAT size = 2935 bytes (460 bytes decrease)
Output file size = 3013 bytes (1183 bytes = 28.19% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-9-1.png
288x288 pixels, 8 bits/pixel, 239 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3545 bytes
Input file size = 4352 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3108
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3001
  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 = 3001

Output IDAT size = 3001 bytes (544 bytes decrease)
Output file size = 3079 bytes (1273 bytes = 29.25% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/circle-sections_files/figure-html/unnamed-chunk-10-1.png
288x288 pixels, 8 bits/pixel, 242 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 5373 bytes
Input file size = 6189 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4679
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 4517
  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 = 4517

Output IDAT size = 4517 bytes (856 bytes decrease)
Output file size = 4595 bytes (1594 bytes = 25.76% decrease)

--- finished re-building ‘circle-sections.Rmd’

--- re-building ‘closed-figures.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 218 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2983 bytes
Input file size = 3727 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2593
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2513
  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 = 2513

Output IDAT size = 2513 bytes (470 bytes decrease)
Output file size = 2591 bytes (1136 bytes = 30.48% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 224 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2399 bytes
Input file size = 3161 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2042
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2003
  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 = 2003

Output IDAT size = 2003 bytes (396 bytes decrease)
Output file size = 2081 bytes (1080 bytes = 34.17% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 8 bits/pixel, 249 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2900 bytes
Input file size = 3737 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2415
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2375
  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 = 2375

Output IDAT size = 2375 bytes (525 bytes decrease)
Output file size = 2453 bytes (1284 bytes = 34.36% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-5-1.png
288x288 pixels, 8 bits/pixel, 189 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1500 bytes
Input file size = 2157 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1242
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1219
  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 = 1219

Output IDAT size = 1219 bytes (281 bytes decrease)
Output file size = 1297 bytes (860 bytes = 39.87% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 8 bits/pixel, 154 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2039 bytes
Input file size = 2591 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1650
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1625
  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 = 1625

Output IDAT size = 1625 bytes (414 bytes decrease)
Output file size = 1703 bytes (888 bytes = 34.27% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4174 bytes
Input file size = 5032 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3558
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3476
  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 = 3476

Output IDAT size = 3476 bytes (698 bytes decrease)
Output file size = 3554 bytes (1478 bytes = 29.37% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/closed-figures_files/figure-html/unnamed-chunk-8-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3748 bytes
Input file size = 4606 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3280
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3211
  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 = 3211

Output IDAT size = 3211 bytes (537 bytes decrease)
Output file size = 3289 bytes (1317 bytes = 28.59% decrease)

--- finished re-building ‘closed-figures.Rmd’

--- re-building ‘eight-shapes-figures.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/eight-shapes-figures_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 252 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3700 bytes
Input file size = 4546 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3090
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3018
  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 = 3018

Output IDAT size = 3018 bytes (682 bytes decrease)
Output file size = 3096 bytes (1450 bytes = 31.90% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/eight-shapes-figures_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 252 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3199 bytes
Input file size = 4045 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2794
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2755
  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 = 2755

Output IDAT size = 2755 bytes (444 bytes decrease)
Output file size = 2833 bytes (1212 bytes = 29.96% decrease)

--- finished re-building ‘eight-shapes-figures.Rmd’

--- re-building ‘flowers-figures.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/flowers-figures_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 240 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2464 bytes
Input file size = 3274 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1985
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1941
  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 = 1941

Output IDAT size = 1941 bytes (523 bytes decrease)
Output file size = 2019 bytes (1255 bytes = 38.33% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/flowers-figures_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 248 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2838 bytes
Input file size = 3672 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2291
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2230
  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 = 2230

Output IDAT size = 2230 bytes (608 bytes decrease)
Output file size = 2308 bytes (1364 bytes = 37.15% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/flowers-figures_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 8 bits/pixel, 253 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4159 bytes
Input file size = 5008 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3569
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3469
  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 = 3469

Output IDAT size = 3469 bytes (690 bytes decrease)
Output file size = 3547 bytes (1461 bytes = 29.17% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/flowers-figures_files/figure-html/unnamed-chunk-5-1.png
288x288 pixels, 8 bits/pixel, 245 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2392 bytes
Input file size = 3217 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2032
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1989
  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 = 1989

Output IDAT size = 1989 bytes (403 bytes decrease)
Output file size = 2067 bytes (1150 bytes = 35.75% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/flowers-figures_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 8 bits/pixel, 240 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2285 bytes
Input file size = 3095 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1895
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1878
  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 = 1878

Output IDAT size = 1878 bytes (407 bytes decrease)
Output file size = 1956 bytes (1139 bytes = 36.80% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/flowers-figures_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4319 bytes
Input file size = 5174 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3717
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3622
  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 = 3622

Output IDAT size = 3622 bytes (697 bytes decrease)
Output file size = 3700 bytes (1474 bytes = 28.49% decrease)

--- finished re-building ‘flowers-figures.Rmd’

--- re-building ‘generate_matriks.Rmd’ using rmarkdown

Quitting from lines 11-17 [unnamed-chunk-1] (generate_matriks.Rmd)
Error: processing vignette 'generate_matriks.Rmd' failed with diagnostics:
there is no package called 'devtools'
--- failed re-building ‘generate_matriks.Rmd’

--- re-building ‘lines.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 152 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1214 bytes
Input file size = 1760 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 956
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 941
  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 = 941

Output IDAT size = 941 bytes (273 bytes decrease)
Output file size = 1019 bytes (741 bytes = 42.10% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 196 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1926 bytes
Input file size = 2604 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1717
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1684
  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 = 1684

Output IDAT size = 1684 bytes (242 bytes decrease)
Output file size = 1762 bytes (842 bytes = 32.33% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 8 bits/pixel, 183 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1581 bytes
Input file size = 2220 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1310
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1294
  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 = 1294

Output IDAT size = 1294 bytes (287 bytes decrease)
Output file size = 1372 bytes (848 bytes = 38.20% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-5-1.png
288x288 pixels, 8 bits/pixel, 145 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1135 bytes
Input file size = 1660 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 900
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 886
  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 = 886

Output IDAT size = 886 bytes (249 bytes decrease)
Output file size = 964 bytes (696 bytes = 41.93% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 8 bits/pixel, 189 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1833 bytes
Input file size = 2490 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1717
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1677
  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 = 1677

Output IDAT size = 1677 bytes (156 bytes decrease)
Output file size = 1755 bytes (735 bytes = 29.52% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 158 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2242 bytes
Input file size = 2806 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2001
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1991
  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 = 1991

Output IDAT size = 1991 bytes (251 bytes decrease)
Output file size = 2069 bytes (737 bytes = 26.27% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-8-1.png
288x288 pixels, 8 bits/pixel, 173 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1332 bytes
Input file size = 1941 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1068
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1061
  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 = 1061

Output IDAT size = 1061 bytes (271 bytes decrease)
Output file size = 1139 bytes (802 bytes = 41.32% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/lines_files/figure-html/unnamed-chunk-9-1.png
288x288 pixels, 8 bits/pixel, 127 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 1478 bytes
Input file size = 1949 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1321
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1306
  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 = 1306

Output IDAT size = 1306 bytes (172 bytes decrease)
Output file size = 1384 bytes (565 bytes = 28.99% decrease)

--- finished re-building ‘lines.Rmd’

--- re-building ‘other-figures.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/other-figures_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4088 bytes
Input file size = 4946 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3539
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3506
  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 = 3506

Output IDAT size = 3506 bytes (582 bytes decrease)
Output file size = 3584 bytes (1362 bytes = 27.54% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/other-figures_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 8 bits/pixel, 202 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3382 bytes
Input file size = 4078 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3102
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3018
  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 = 3018

Output IDAT size = 3018 bytes (364 bytes decrease)
Output file size = 3096 bytes (982 bytes = 24.08% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/other-figures_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 8 bits/pixel, 233 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3102 bytes
Input file size = 3891 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2798
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2736
  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 = 2736

Output IDAT size = 2736 bytes (366 bytes decrease)
Output file size = 2814 bytes (1077 bytes = 27.68% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/other-figures_files/figure-html/unnamed-chunk-5-1.png
288x288 pixels, 8 bits/pixel, 177 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2655 bytes
Input file size = 3276 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2396
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2394
  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 = 2394

Output IDAT size = 2394 bytes (261 bytes decrease)
Output file size = 2472 bytes (804 bytes = 24.54% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/matRiks.Rcheck/vign_test/matRiks/vignettes/other-figures_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4666 bytes
Input file size = 5524 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4274
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 4200
  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 = 4200

Output IDAT size = 4200 bytes (466 bytes decrease)
Output file size = 4278 bytes (1246 bytes = 22.56% decrease)

--- finished re-building ‘other-figures.Rmd’

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

Error: Vignette re-building failed.
Execution halted