Hi, my name is Ellen. I want to ask you about R Code.
I got a code for extracting a pixel value, but I can't compile it..
It is said "Error in is.data.frame(x) : object 'lena' not found"
Here is the original full code:
library(pixmap)
lena <- read.pnm("oldlennablur.pgm")
write.table(lena@grey,"mylenna", quote=FALSE, row.names = FALSE, col.names=
FALSE)
plot(pixmapGrey(as.matrix(read.table("mylenn"))))
do you know why i got the error? i have change the "oldlennablur.pgm" with the
one i have and also with the specified path on my computer..|
And would you like give me an explanation about "read.pnm". I need to know what
result will i get using this syntax.
Does this syntax give us a 256x256 matrix if we input the 256x256 pixels image?
I will use the data for my project, so I need to know how and what the data i
would get..
Thank you very much..
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
