Error(s) in re-building vignettes:
--- re-building ‘introduction.Rmd’ using rmarkdown
** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-28-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 36617 bytes
Input file size = 36743 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 26166
  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 = 26166

Output IDAT size = 26166 bytes (10451 bytes decrease)
Output file size = 26244 bytes (10499 bytes = 28.57% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-28-2.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 38887 bytes
Input file size = 39013 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 27823
  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 = 27823

Output IDAT size = 27823 bytes (11064 bytes decrease)
Output file size = 27901 bytes (11112 bytes = 28.48% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-28-3.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 8914 bytes
Input file size = 9004 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8136
  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 = 7598
  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 = 7598

Output IDAT size = 7598 bytes (1316 bytes decrease)
Output file size = 7676 bytes (1328 bytes = 14.75% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-28-4.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 11328 bytes
Input file size = 11418 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9791
  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 = 9777
  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 = 9777

Output IDAT size = 9777 bytes (1551 bytes decrease)
Output file size = 9855 bytes (1563 bytes = 13.69% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-29-1.png
576x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 7076 bytes
Input file size = 7934 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6165
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 6165
  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 = 6165

Output IDAT size = 6165 bytes (911 bytes decrease)
Output file size = 6243 bytes (1691 bytes = 21.31% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-30-1.png
576x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 7750 bytes
Input file size = 8608 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6714
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 6699
  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 = 6699

Output IDAT size = 6699 bytes (1051 bytes decrease)
Output file size = 6777 bytes (1831 bytes = 21.27% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-31-1.png
576x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 7391 bytes
Input file size = 8249 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6110
  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 = 6110

Output IDAT size = 6110 bytes (1281 bytes decrease)
Output file size = 6188 bytes (2061 bytes = 24.98% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-38-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 29754 bytes
Input file size = 29868 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 21504
  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 = 21504

Output IDAT size = 21504 bytes (8250 bytes decrease)
Output file size = 21582 bytes (8286 bytes = 27.74% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-38-2.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 31562 bytes
Input file size = 31676 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 24683
  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 = 24683

Output IDAT size = 24683 bytes (6879 bytes decrease)
Output file size = 24761 bytes (6915 bytes = 21.83% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-42-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 30765 bytes
Input file size = 30879 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 22351
  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 = 22351

Output IDAT size = 22351 bytes (8414 bytes decrease)
Output file size = 22429 bytes (8450 bytes = 27.36% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-42-2.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 32103 bytes
Input file size = 32217 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25854
  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 = 25854

Output IDAT size = 25854 bytes (6249 bytes decrease)
Output file size = 25932 bytes (6285 bytes = 19.51% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-43-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 10526 bytes
Input file size = 10616 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8724
  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 = 8724

Output IDAT size = 8724 bytes (1802 bytes decrease)
Output file size = 8802 bytes (1814 bytes = 17.09% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-43-2.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 27297 bytes
Input file size = 27411 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 21070
  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 = 21070

Output IDAT size = 21070 bytes (6227 bytes decrease)
Output file size = 21148 bytes (6263 bytes = 22.85% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-44-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 11397 bytes
Input file size = 11487 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9430
  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 = 9430

Output IDAT size = 9430 bytes (1967 bytes decrease)
Output file size = 9508 bytes (1979 bytes = 17.23% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-clang/RSDA.Rcheck/vign_test/RSDA/vignettes/introduction_files/figure-html/unnamed-chunk-45-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 15773 bytes
Input file size = 15863 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 12690
  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 = 12690

Output IDAT size = 12690 bytes (3083 bytes decrease)
Output file size = 12768 bytes (3095 bytes = 19.51% decrease)