Re: [R] about file name

2016-07-28 Thread ruipbarradas
Hello, Just use ?sub. x <- "35.84375_.100.71875" y <- sub("_\\.", "_-", x) Hope this helps, Rui Barradas   Citando lily li : > Thanks, but how to get the string like this: > "35.84375_-100.71875" use the minus sign instead of dot. > > On Thu, Jul 28, 2016 at 2:38 PM, jim holtman wrote: >> ju

Re: [R] about file name

2016-07-28 Thread jim holtman
add another step: (need to learn about regular expressions) > a [1] "X35.84375_.100.71875" > a.new <- sub("^.", '', a) > a.new [1] "35.84375_.100.71875" > sub("_.", "_-", a.new) [1] "35.84375_-100.71875" > Jim Holtman Data Munger Guru What is the problem that you are trying to solve? Tell me wh

Re: [R] about file name

2016-07-28 Thread lily li
Thanks, but how to get the string like this: "35.84375_-100.71875" use the minus sign instead of dot. On Thu, Jul 28, 2016 at 2:38 PM, jim holtman wrote: > just strip off the first character: > > > a > [1] "X35.84375_.100.71875" > > a.new <- sub("^.", '', a) > > a.new > [1] "35.84375_.100.71875"

Re: [R] about file name

2016-07-28 Thread jim holtman
just strip off the first character: > a [1] "X35.84375_.100.71875" > a.new <- sub("^.", '', a) > a.new [1] "35.84375_.100.71875" > Jim Holtman Data Munger Guru What is the problem that you are trying to solve? Tell me what you want to do, not how you want to do it. On Thu, Jul 28, 2016 at 3:51

[R] about file name

2016-07-28 Thread lily li
Hi R users, I have a string for example 'X35.84375_.100.71875', and I have another dataframe df that I want to export with the transformed string name '35.84375_-100.71875' with no extension. How to do this in R? Thanks for your help. a = 'X35.84375_.100.71875' write.table(df, file='', row.names=