R help - Oct 2004 - R and Java

I am calling R from within Java. 

 

But I don't think that I can get any plots written to file from R - inside
Java.

 

This snippet of code(from a larger piece of code) compiles in Java, but
doesn't do anything!

 

 

 

 

 

functions.append("trial<-c(1,3,4,5)\n");

            

            functions.append("dawpdf<-function(filename){\n");

            functions.append("
dev.print(device=pdf,file=filename,\n");

            functions.append("
width=6,height=6,onefile=TRUE,family=\"Helvetica\",\n");

            functions.append("                     title=\"R Graphics
Output\")\n");

            functions.append("                     }\n");

            functions.append("plot(trial)\n");

           
functions.append("c<-dawpdf(\"trial.pdf\"\n");

            functions.append("c\n");

 

 

Is it possible to write plots to files from R code which is imbedded in
java?

 

 

-------------------------------------------------

 

Laura Jane Dow

 

 


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Hi Bobby,

 

You are right - "functions" is a StringBuffer object.

 

I've compiled without the syntax error.

 

The error message is: Error in dev.print(....

                      can only read screen device

 

Do you think this means that RTerm doesn't actually produce a

Screen plot when called from Java?

 

i.e., functions.append("plot(something)\n");

 

doesn't produce a screen plot anywhere?

 

Regards,

 

Laura

 

 

-------------------------------------------------

 

Laura Jane Dow

 

Energy Scitech Ltd,

Scitech House,

1 Barnby Road,

Knaphill,

Woking,

Surrey.

GU21 2NL

 

laura.dow@enscitech.com

Phone:  +44 (0)1483 79 50 58 Direct

Phone: +44 (0)1483 79 78 00 Central 
Fax:     +44 (0)1483 79 76 00
Mobile: +44 (0)7763 10 54 07

 <http://www.enscitech.com/> http://www.enscitech.com

 


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