rstudio-server

问题 I have Rstudio server installed on CentOS 6, but I cannot login to Rstudio from the browser at http://localhost:8787 in browser. A popup titled "RStudio Initialization Error" appears with message "Unable to connect to service". I have tried the following to remedy the error, but I have been without success: $ sudo rstudio-server verify-installation rstudio-server stop/waiting rserver[19273]: ERROR system error 13 (Permission denied) [username=rstudio-server]; OCCURRED AT: core::Error server:

问题 I'm considering different solutions for creating a Web application that shows some data analytics to the user. I want to use R with shiny server but I'm not certain how it is gonna scale for large number of users. Questions: Can shiny server support 100 or 1000 or in even the extreme case of 10000 simultaneous users? In other words how well does shiny server scale with the number of users? Does shiny server create a new instance of R for each user or do the users share one R instance? 回答1:

问题 I'm trying to install ROracle package on a unix box. The package gets installed properly. But library(ROracle) does not work fine with the error library(ROracle) Error in dyn.load(file, DLLpath = DLLpath, ...) : unable to load shared object '/u01/group1/home/oracle/R/x86_64-redhat-linux-gnu-library/3.1/ROracle/libs/ROracle.so': libclntsh.so.11.1: cannot open shared object file: No such file or directory Error: package or namespace load failed for ‘ROracle’ The package installs fine from the

问题 After following this simple tutorial http://www.louisaslett.com/RStudio_AMI/ and video guide http://www.louisaslett.com/RStudio_AMI/video_guide.html I have setup an RStudio environment on EC2. The only problem is, I can't upload large files (> 1GB). I can upload small files just fine. When I try to upload a file via RStudio, it gives me the following error: Unexpected empty response from server Does anyone know how I can upload these large files for use in RStudio? This is the whole reason I