Grace is an amazing data-analysis/plotting software that I use all the time, to create "journal" or "presentation" quality pictures.
Gnuplot is my workhorse, Grace is what I use when I want to play polo.
Although it is limited to 2D plotting, the professional quality of the product, the ability to export to a bunch of different formats (eps in particular), and the fact that it is freely available under GPL, make it irresistible.
Every once in a while, I have to make plots with insets. Like the one shown here. Each time I have to do it, I spend 15 minutes figuring out how to do it, 10 minutes to do it, and 5 minute telling myself how I should write it down for next time. So here are step-by-step instructions.
- Data -> Import -> ASCII to open the "Grace:Read Sets" dialog box.
- Read in data (here I read in three data sets), and clean up, as usual to create Graph 1, which is labeled G.
- To create Graph 2, open the "Grace:Read Sets" dialog box again.
- In the "Read to Graph" portion the "(+) G0" graph is selected by default.
- Right click on the "(+) G0" to open up a menu.
- Select "Create new"
- Read in data that you want in this graph, as in step 2.
- At this point everything looks muddled, since both the graphs are superimposed. Later on, you can use mouse to select the appropriate graph, but right now, since they are almost on top of each other we need a different strategy.
- Go to "Plot -> Graph Appearence -> Viewport".
- Adjust the min and max values until desirable.
- Now go on, as before. Remember to check which graph is "active" before making any changes.
Update: Consider using Veusz; it has a much more modern feel. I wrote about how to do inset plots with Veusz here.