bidirectional communication

[Petr M. <mi...@ph...>]

I've put to the "web page" section about bidirectional communication your
program <=> gnuplot: there is C, python and m with links to files with demo
implementations.

Interestingly, the C program cannot be exactly copied into m. See those
there scripts there -- mkfifo blocks, and "set print" must be closed after
reading MOUSE_* variables from fifo. Someone has an idea?

BTW, it would be nice to have a "ginput.m" implementation for Octave --
somebody can do it?

And a demo for Java?

***

Well, ad to the above problem with fifo in Octave -- why the following in
bash does not work?

bash$ mkfifo cau
bash$ tail -f cau

and in another xterm:

gnuplot> set print "cau"
gnuplot> print "hello"

Only sometimes the text appears in the "tail", but always it gets flushed
after "set print" (closing print file) or quitting gnuplot -- and why it
works in the C demo without closing "set print"?

---
pm