Common Lisp/External libraries/Vecto

Vecto is a library for producing graphics programmatically, in PNG format, and typically on the fly. It is a simplified interface to CL-VECTORS, a vector rasterization library. It is very portable and should work in any Common Lisp environment. This kind of program could be used to trivially create a captcha generator or mathematical function plotter like Gnuplot or even more complicated visualization.

Other Graphics Libraries
Vecto is certainly not the only library for this purpose. You might also want to check out:


 * http://www.fractalconcept.com/asp/cl-pdf CL-PDF: a library for producing PDF files
 * http://www.weitz.de/cl-gd/ CL-GD: a binding to the libgd2 library
 * http://common-lisp.net/project/cl-magick/ CL-MAGICK: a binding to the Image Magick library