how to connect to Rserve with an R client
12,231
I got some information from the author of Rserve. The variable changed in Rserve will be available to RSclient connected after the changing. In particular I got these codes working.
$ ~/bin/R CMD Rserve --RS-enable-control
$ ~/bin/R
library(RSclient);
c=RS.connect();
RS.server.eval(c,"xx<-1");
## [1] TRUE
RS.close(c)
## NULL
c1=RS.connect();
RS.eval(c1,quote(yy<-xx));
## [1] 1
quit()
Author by
user1103294
Updated on June 14, 2022Comments
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user1103294 almost 2 years
I'm not sure if I am doing this right.
In tab 1, I open R, then I execute Rserve(port = 6311) inside the R session. I load the variable "name = Hello World"
In tab 2, I open R, then I try to connect to Rserve. I do this by:
c = RSconnect(host = "localhost", port 6311)
I then try to print hello world by:
RSeval(c, name)
But it does not work. I get:
Error in RSeval(c, name) : object 'name' not found
What am I doing wrong here?
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user1103294 about 11 yearsbut in the server, I already declared that name = "hello world". I want to access that variable from the client.
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Indicator about 11 yearsFor each client connected to the server, there is a unique context for that client. The context for each client is not overlapped with the context of the server. I also tried to define a variable on the server side, and access it from a client. However, this seems not working by far. I am using Rserve 0.7.1.
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user1103294 about 11 yearsI think it is possible for the server to share it's context to the client. This is actually the suggested solution for this same problem that I am trying to solve. We're both just probably missing a step.
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Indicator about 11 yearsI guess so. I have already sent an email to the author of Rserve. I will let you know if I got further information.
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user1103294 about 11 yearsit works! thanks for helping me debug it. and i never knew you could just message the author....
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Indicator about 11 yearsThank you for raising this question that motivates me to dig the problem deeper. Previously I was using an unperfect walkaround.