`文件错误（con，“r”）：无法通过运行BRugsFit（）打开连接

Question

I have a error about Error in file(con, "r") : cannot open the connection from running BRugsFit(). I assume all the input arguments are fine, and the calling code is

> output = BRugsFit("model.txt", data, inits, numChains = 2, seed=6, parametersToSave,nBurnin = 100,nIter = 1000, nThin = 5, coda = T,digits = 5)

****
* BlackBox
* string too long
- HostFiles.Init  (pc=00003FB1, fp=BFFDE550)
- HostFiles.$$  (pc=0000000A, fp=BFFDE560)
****
Error in file(con, "r") : cannot open the connection
In addition: Warning message:
In file(con, "r") :
  cannot open file '/tmp/RtmpU7v9PZ/buffer.txt': No such file or directory

So I wonder what might be the reason of the error, and how to solve it? Thank you so much!

Answer 1

It tells you that the file model.txt doesn't exist. Try to indicate the full path to the file:

output <- BRugsFit("/path/to/file/model.txt", data, inits, numChains = 2, seed=6, parametersToSave,nBurnin = 100,nIter = 1000, nThin = 5, coda = T,digits = 5)

or first set the working directory with setwd :

setwd("/path/to/file/")

Answer 2

Sometimes, if I have spaces in a directory name (and/or dashes), R gives me the same errors (at least on OSX).

eg when the directory is '.../.../.../blah blah blah - blah' it does not work.

Renaming the folder to eg '.../.../.../blah_blah_blah-blah' resolves the issue.

Answer 3

I get this error when trying to write to a temporary directory, it looks like the above is the same problem. The directory is made, but the file cannot be written to that directory despite changing permissions. The working directory, the path to the file I am working with, and the path to the temporary directory are all fine. It looks like the OP is having the same conflict.

EDIT: I fixed this problem by changing the extension on the file. Although both extensions referred to the same file type, the code would only take one of them. | Sometimes closing the console/terminal and restarting it, loading the libraries again on start-up is all it needs. (presumably would work for the GUI without saving or using prior workspace)

Answer 4

In my case, it is because shiny create a new folder (outside .rproj file) that contain app.R file. Hence I need to move my css file to the same folder, or I specify the path folder which is less convenient