Error(s) in re-building vignettes:
  ...
--- re-building ‘base-and-grid.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/netplot.Rcheck/vign_test/netplot/vignettes/base-and-grid_files/figure-html/baseplot-1.png
576x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 11267 bytes
Input file size = 12137 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 10178
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 10105
  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 = 10105

Output IDAT size = 10105 bytes (1162 bytes decrease)
Output file size = 10183 bytes (1954 bytes = 16.10% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/netplot.Rcheck/vign_test/netplot/vignettes/base-and-grid_files/figure-html/alltogether-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 49832 bytes
Input file size = 49982 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 38677
  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 = 38677

Output IDAT size = 38677 bytes (11155 bytes decrease)
Output file size = 38755 bytes (11227 bytes = 22.46% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/netplot.Rcheck/vign_test/netplot/vignettes/base-and-grid_files/figure-html/topright-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 51386 bytes
Input file size = 51536 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 40433
  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 = 40433

Output IDAT size = 40433 bytes (10953 bytes decrease)
Output file size = 40511 bytes (11025 bytes = 21.39% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/netplot.Rcheck/vign_test/netplot/vignettes/base-and-grid_files/figure-html/tilted-1.png
576x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 54189 bytes
Input file size = 54339 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 41867
  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 = 41867

Output IDAT size = 41867 bytes (12322 bytes decrease)
Output file size = 41945 bytes (12394 bytes = 22.81% decrease)

--- finished re-building ‘base-and-grid.Rmd’

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

Quitting from lines 32-43 [pkgs-and-data] (examples.Rmd)
Error: processing vignette 'examples.Rmd' failed with diagnostics:
there is no package called 'ggraph'
--- failed re-building ‘examples.Rmd’

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

Error: Vignette re-building failed.
Execution halted