How write to file using rapache?

Question

We are trying some tables data to a file with no success.

using write.csv.

Here is some example code that we try:

> <%
> 
> X<-c(1:666)
> 
> print(X)
> 
> write.csv(X,"hh")
> 
> %>

Here are the rapache errors, that we can't figure:

RApache Warning/Error!!!

Error in file(file, ifelse(append, "a", "w")) : cannot open the connection
RApache Warning/Error!!!

In addition:
RApache Warning/Error!!!

Warning messages:
RApache Warning/Error!!!

1: In readLines(icon, 1) : incomplete final line found on '/var/www/brew/sampleplan/step1_5.php'
RApache Warning/Error!!!

2: In readLines(icon, 1) : incomplete final line found on '/var/www/brew/sampleplan/step1_5.php'
RApache Warning/Error!!!

3: In readLines(icon, 1) : incomplete final line found on '/var/www/brew/sampleplan/step1_5.php'
RApache Warning/Error!!!

4: In readLines(icon, 1) : incomplete final line found on '/var/www/brew/sampleplan/writefile.php'
RApache Warning/Error!!!

5: In file(file, ifelse(append, "a", "w")) : cannot open file 'hh': Permission denied
RApache Warning/Error!!!

Function brew returned an object of 'try-error'. Returning HTTP response code 500.

If some one can write us a simple example or correct our code it will be awesome.

Thank's,

Yoni & Tsvi.

R can't write to the current working directory where R was running. Sort out your permissions and try again. — Gavin Simpson, Apr 15 '11 at 15:47
And please don't cross-post! You already asked the same question on RApache mailing list! — aL3xa, Apr 15 '11 at 16:07
Does your source have all the greater-than signs that I see in your question? That would probably screw it up badly. It looks like the whole script is broken, not the write.csv only. — Spacedman, Apr 16 '11 at 14:38

score 4 · Answer 1 · answered Apr 15 '11 at 16:05

To make your life easier, get your code working on its own first, then introduce rApache.

The error that you are seeing means that write.csv cannot write to the location that you specified. Since writing to file is a common source of problems, you should add some checking and error handling code to make things more robust. For example,

Specify an absolute path (path.expand) or at least make sure you know where the current working directory is (getwd).
Check that the directory you are writing to exists (file.exists) and that you can write to it (file.access, with mode = 2).
Wrap your call to write.csv in a call to try or tryCatch.

Hi, Thanks for the replies. First, the r code works perfect with r ENV. Second there are no permission problems. The entire computer is open to every one for r and w permission. We did that in the to avid any problems of permission. The getwd() command didnt repliy using the rapache So we really dont know what cause the problems )-: — yoni and tszi, Apr 16 '11 at 11:24

How write to file using rapache?

1 Answers1