> >> What seems ideal to me would be a way to grab the R console output one
> >> line at a time rather than all at once so I can just append those lines
> >> individually to my gtk text buffer. I can easily do this for a specific
> >> task, such as only for a data.frame, programmatically break it apart by
> >> rows. However, I'm hoping for something more general that could apply to
> >> any output.
>
> Erh... did you check the example ?
> http://bitbucket.org/lgautier/rpy2/src/813a7bc798ae/demos/radmin.py
> It seems to be doing what you are looking for.
>
Yes, checked it before I sent the email (ah, but if only I found it
before I started coding...I wouldn't have reinvented the wheel so much;
though I guess it was better to learn on my own.). My code for adding
the result to the gtk.TextBuffer is essentially the same.
What I meant was having access to the lines of output in R before it's
converted to a Python string....but see below for a workaround.
> >> I have tried to set robjects.rinterface.setWriteConsole(f) to some
> >> function f that just appends to a buffer, but that console callback
> >> function doesn't seem to append anything to the buffer if I do a call to
> >> robjects.r("some command here").
> >
> > robjects.r("foo") doesn't print anything itself. (Unless 'foo' calls
> > the print() function.) Try robjects.r("print(foo)") or
> > robjects.r["print"](robjects.r("foo")).
>
> The confusion might occur because genuine R console calls print on an
> object (a bit like a Python console calls the method __repr__() ).
I'm embarassed, because I read about using R's print() function in a
former email on this email list...but somehow I didn't connect the dots
for my own problem. Anyway, I'm happy to see that when I do it correctly
and the print() command's output is appended to the buffer, the output
is separated into many cells rather than as one big string.
I just whipped up a quick function to combine cells into lines:
def buf2linebuf(buf):
line = ""
line_buf = []
for cell in buf:
if cell[0] == '\n':
line_buf.append(line)
line = cell.lstrip()
else:
line = line + cell
return line_buf
When I then appended each of these lines one at a time to my TextBuffer,
the output was no longer truncated.
Thanks for your quick help. Once I get a bit more comfortable in Python,
I'll be happy to help out with RPy since my project will be relying so
heavily on it.
cheers,
brandon
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