search for: kafka399

Displaying 1 result from an estimated 1 matches for "kafka399".

2013 Mar 22
1
read.pnm question
Dear R People: I am trying to replicate a cool example that I saw on the R-bloggers some time ago by kafka399. Here are the lines tI think may be causing the trouble: gray_file <- read.pnm(path) pos[i,] <- c(gray_file@grey) The warning error that I get is "In rep(cellres, length=2): x is NULL so the result will be NULL Any suggestions would be much appreciated. Thanks, Sincerely, Erin...