Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-05 Thread John Kane
Relative paths are not a mystery nor are they solely an aspect of linux. They are in fact the norm in DOS and Windows as well as in Linux or any other file system that use a tree structure. Oh, is that all! I just never thought of that behaviour as 'relative paths' just as something that one

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-04 Thread John
On Thu, 3 May 2012 10:50:46 -0800 John Kane jrkrid...@inbox.com wrote: Thanks Jeff and Sarah. I was thinking mainly of using the base path and paste routine which is something I do in Windows It will take me a while to figrue out relative paths. Relative paths are not a mystery

[R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread John Kane
I am the proud owner of a new laptop since my old one died the other day. Currently I have a dual-boot Windows 7 Home and Ubuntu 12.04 . I'll leave the Windows problems for another post. I know practically nothing about Linux so I am probably doing something stupid but ... at the moment I

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread Sarah Goslee
Hi John, You're probably messing up the path, just as you suspect. If you use a relative path, like you are doing, then R looks for that location starting at R's current working directory, visible with getwd(). For linux, that's the location at which you started R if you started it from a

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread Jeff Newmiller
All of your tests are with relative paths. Use getwd() identify your starting directory, and if it isn't you can use setwd() to start in the right place. --- Jeff NewmillerThe . . Go

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread John Kane
Thanks. I had not realsed there were relative paths until Sarah mentioned them. It's working now: see my post to Sarah. John Kane Kingston ON Canada -Original Message- From: jdnew...@dcn.davis.ca.us Sent: Thu, 03 May 2012 09:30:10 -0700 To: jrkrid...@inbox.com,

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread John Kane
Thanks Sarah, I suspected something like that but am still gropping around in Linux. I vaguely remember how to cd to someplace. Shades of DOS 3.2! Of was that Unixor both! Also I think I was trying to be a bit too smart-alecky in where I was placing my data folder so I moved it to my home

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread Jeff Newmiller
I like the idea of staying with absolute paths. Before you write too much R code that builds in absolute paths, please consider how difficult it will be to adjust all of those paths if you need to run on a different computer or you need to reorganize your overall directory structure. If you

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread Sarah Goslee
On Thu, May 3, 2012 at 1:53 PM, Jeff Newmiller jdnew...@dcn.davis.ca.us wrote: I like the idea of staying with absolute paths. Before you write too much R code that builds in absolute paths, please consider how difficult it will be to adjust all of those paths if you need to run on a

Re: [R] Cannot read or write to file in Linux Ubuntu

2012-05-03 Thread John Kane
Thanks Jeff and Sarah. I was thinking mainly of using the base path and paste routine which is something I do in Windows It will take me a while to figrue out relative paths. John Kane Kingston ON Canada -Original Message- From: sarah.gos...@gmail.com Sent: Thu, 3 May 2012