R 避免留下使用过的设备
我想通过函数在pdf上书写R 避免留下使用过的设备,r,error-handling,pdf-generation,R,Error Handling,Pdf Generation,我想通过函数在pdf上书写 pdf("termolayout.pdf") generate_termolayout(db) #This functions prints thermolayouts, but when the db is corrupted, generates errors dev.off() 如何确保R运行dev.off()即使generate\u termolayout失败? mypdf <- function() { pdf("termolayout.
pdf("termolayout.pdf")
generate_termolayout(db)
#This functions prints thermolayouts, but when the db is corrupted, generates errors
dev.off()
如何确保R运行
dev.off()
即使generate\u termolayout
失败?
mypdf <- function() {
pdf("termolayout.pdf")
on.exit(dev.off())
stop("An error.")
}
mypdf()
#Error in mypdf() : An error.
dev.cur()
#RStudioGD
#2
mypdf使用on.exit
:
mypdf <- function() {
pdf("termolayout.pdf")
on.exit(dev.off())
stop("An error.")
}
mypdf()
#Error in mypdf() : An error.
dev.cur()
#RStudioGD
#2
mypdf查看tryCatch()
查看tryCatch()