[R] Plotting to stdout

[Romain Francois]

On 08/28/2009 01:47 PM, Gábor Csárdi wrote:
>
> On Fri, Aug 28, 2009 at 1:33 PM, Gabor
> Grothendieck<ggrothendieck at gmail.com>  wrote:
> [...]
>>
>> I could have used this functionality in a previous project as well; however,
>> for Oliver's application just pass the filename to the python program use that
>> in the<img src=...>  tag (or have the python program pass the filename to
>> the R program).
>>
>> If there is some aspect of this problem that has not been explained that
>> truly does make passing the graphic file contents to the python
>> program desirable
>> then have R write out the graphic file and then have R read it back in.
>>
>
> Unfortunately, this is not always a good solution. For example, I am
> running Rserve with connections from untrusted users. The Rserve
> process is not allowed to write to the disk at all, but then there is
> no easy way to create plots.
>
> The patch Romain mentioned above looks like a good solution.
>
> Gabor
>

There is also the xGD package: http://www.rforge.net/xGD/

Instead of writing to a file, R drawing commands are sent to a TCP/IP 
socket. There is an example of a java graphics server which you can use 
to render the graph.

I would still like to have some connections API at the c level, for this 
and other things ...

Romain


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Romain Francois
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