http://www.gnuplot.info

It's got a little bit of a learning curve, like if you want to use the PostScript terminal, but is easy to just jump right in and use. Of course, since it lets you control and modify every aspect of the plot if you want, it's a big package to master. An example of working with date data is given in the Demos and another is in the good tutorial web pages at LANL - http://t16web.lanl.g...t/datetime-e.html

If you know any python, you might want to look at Matplotlib - http://matplotlib.sourceforge.net/ It's also very flexible and very powerful. It has a big dates module - http://matplotlib.so...-matplotlib.dates I haven't used MPL much myself.

HTH a little.

Cheers,
Scott.

The Winders version is up to 4.4 now and the terminals are undergoing rapid updates.

My (rather clunky) workflow is still:

a) Generate the data; construct the gnuplot script from a previous template.
b) Run gnuplot and generate an EPS file.
c) Feed the EPS into ghostscript/GSView to display it.
d) Maximize the graph on the screen.
e) Do a window-interior capture with PMView.
f) For a publication graph, change the DPI to 600 then change the X-dimension to 3.35" wide.
g) Save the file as a TIF.

I started using the PostScript terminal because that was the simplest way to get presentation-quality graphics and "enhanced text". It looks like the PNG terminal can do that on its own now - http://gnuplot.sourc...nhanced_utf8.html - but you'd probably want to use a different font with it (as in the SVG demo of the same script - http://gnuplot.sourc...nhanced_utf8.html ).

There have been many enhancements to gnuplot since I started doing things that way (e.g. it has a canvas property now and can generate many enhanced bitmaps/SVGs directly), and the default GUI has been enhanced with wxWidgets, but some of us oldsters can be set in our ways. ;-)

Ooh. Version 4.5 (in development) will have an HTML5 Canvas element - http://www.gnuplot.info/demo_canvas/

I dunno how much of this has been ported to Solaris, though the OS/2 version seems to still be worked on.

HTH!

Cheers,
Scott.