[R] How to run R to generate graphics (jpeg) files dynamically ?

[Helena Shevchuk]

Hello.
I am getting started with R system and I have a question:

I'd like to use R system to generate some graphics (jpeg) files dynamically 
from
command line or perl script (like: > Rgui -input_r_file <file>.r 
-output_jpeg_file <file>.jpeg)

1) How should I invoke R to read the data from external file.
2) How should I invoke R to run statements from external *.r file.
3) How should I invoke R to save processed data as jpeg file.

Thanks a lot.
Helena.





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