Hello R Help, I am fairly new to R and have been scouring the internet trying to find useful tips, tricks and advice with how to solve my problems with R. I finally was able to find you guys, and am now asking for your help. I have a number of different questions regarding R. My most pressing question is, how does one get a map of a very specific area into R? I've been following a tutorial that one of my teachers sent me and been following his code. However, every time I input this code I get a warning message:
My teacher's code: > plot(map, col="dimgray", border=F, add=T) The Error code I get every time I input the above code: > Error in plot.window(...) : need finite 'ylim' values In addition: Warning messages: 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion 2: In min(x) : no non-missing arguments to min; returning Inf 3: In max(x) : no non-missing arguments to max; returning -Inf 4: In plot.window(...) : "border" is not a graphical parameter 5: In plot.window(...) : "add" is not a graphical parameter So, what I think I figured out was that I didn't possess the "map" that my teacher had in his R program. So I went to try and figure out how to get my own map into my R session. I found this line of code to try and input a good Google Earth map I found that I need for my study. But, alas, this code didn't work either and I got more Error codes. The code I used: > img <-readPNG(system.file("img", "Seal_Island_Map.png", package="png")) The Error code I get every time I input the above code: > Error in readPNG(system.file("img", "Seal_Island_Map.png", package="png")) : unable to open For the life of me, I have not been able to find anything anywhere that can help me solve these problems. What am I doing wrong? Can you all help? Thank you and I hope to talk to you all soon. Sincerely, Jackson [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.