SVG Graphs - http://sites.bio.indiana.edu/~watsonlab/software.htm
I have started using SVG vector images for graphs. Specifically, I've made two kinds of scatter plots I couldn't get from standard software. Each of the graphics I've made has a perl script which reads in a .txt data file, and writes out an .svg graph according to the data in the text file.

I've found this is a great way to make custom graphics, where *you* can specify how you wish object geometry (in the svg) will relate to data properties.
Here are two examples:

Rectangle/Line/Point scatter plot
This will make a scatter plot when you have x,y data, but some or all of that data has a min or a max in x or y. For example you might make a scatter plot of several plant species where leaf size of each species is plotted on an x variable. Some of the data you have on leaf size for each species comes from a floral treatment, and is written as "5-7cm". Instead of plotting a point at the midpoint, this script will print a bar from 5 to 7 on the y-axis, at the x point of that species. Also, prints a regression fit line to the data, and prints out the equation at top.

Binned scatter plot
A second perl script makes an .svg binned scatter plot. Again the script reads in a .txt data file - this time the text file should have x,y and a response z data. The script prompts you to specify the size or dimensions of x,y bins. The bins of the xy graphspace are then colored according to the average value of z of the points within them.

Confused? - the graphs are a lot easier to understand by looking at them:
http://sites.bio.indiana.edu/~watsonlab/software.htm

btw - While these graphs open up nicely in Inkscape - I haven't been able to upload them as viewable in this posting box. Maybe I am doing something wrong? - I am just pasting the .svg text into the box.

Marc

Have you sent this to the dev mailing list? You should

Pasting SVG into the post box won't work. There's a thread in the forum FAQ that lists websites where you can upload a SVG file, try deviantart if you have an account there.

I have not sent to the dev list. I will do that. Thanks. I did figure out how to illustrate the graphs.. Here are .png images of a couple of the graphics I've made:

Rectangle line point scatter plot


XYZ binned scatter plot