Cannot flush output to file without destructing the Gnuplot instance

[dmikushin]

Apparently, none of gp << "set output";, gp << std::flush;, gp.do_flush() can do proper flushing of output svg file, if it's done without destructing the gp instance. I keep getting an empty output file. I guess, the library does not offer any explicit flushing API. Is there any workaround?

Thanks!

[dstahlke]

I don't know. gp.do_flush() sends std::flush to boost::iostreams::stream and then calls fflush on the underlying file handle. If data is not getting through, it's probably held up in boost::iostreams. You can check whether boost has any extra flush functions. Make sure you're putting a newline at the end of each gnuplot command.