I'm using Windows XP.
When I put the gnuplot 4.4 binary files into the reduce folder, and then run reduce, the wgnuplot.exe launches ok but no plot appears if I type plot(sin(x)); for example. If I try any gnuplot(command) type of pipes, again nothing happens. I used to get plots when using the original version that came with my reduce install which was gnuplot 4.2, but there were other problems. I have the latest windows install for reduce (2009-10-21). I guess there is some problem with the piping, but I couldn't find a script file that is setting up piping. Any ideas?
If you have fetched all the Reduce sources you can look in packages/plot for all the code that deals with gnuplot. Well also if you are using the CSL version of Reduce the the file csl/cslbase/sysfwin.c has a load of special code that uses SendMessage to transmit stuff to gnuplot.
We include a gnuplot executable in the windows case because that will be the version we have tested with!!!! Do you know what the gnuplot people have changed between 4.2 and 4.4?
Hmm - I just downloaded gnuplot 4.4 and moved its files into the directory where the Reduce executable lives to replace the 4.2 versions. I seem to have to copy a LOT of extra .dll files before it will launch, and I will not move our Reduce release to include a gnuplot 4.4 until and unless I can check the license of all of those to ensure that thay are as BSD-friendly as the main gnuplot license! And also from a Reduce perspecive needing all those files would feel like a big buisance. However when I had done that I tried it (on 64-bit windows 7, but with a 32-bit reduce executable) and it plotted sin x for me.
Did you copy ALL the files that the newer gnuplt needs into the reduce folder?