I have in fact been working on a units package for Sage this summer, based on the DimPy package for Python and am now nearing the end of my project.
I wasn't expecting to be putting things online for another week or two, but I've put some preliminary documentation and the current version of the source code at http://www.inference.phy.cam.ac.uk/dimpy/ The package implements - quantities (as numbers with dimensions attached, where dimensions are the SI units or self-defined non-physical units) - many pre-defined units and some physical constants - user can define new physical and non-physical units - unit conversions (because of the way quantities are set up, units are purely a way of printing nicely) - several different ways of choosing which unit to use (user- determined, via a look-up register or using a set of base units) - vectors and matrices containing quantities with different units - a parser that can handle arithmetic and unit conversions using the unit symbols (e.g. 'm'), full unit names ('meter') with SI prefixes ('cm', 'centimeter') and plurals ('meters') If I could help in any way, that would be great. Miriam --~--~---------~--~----~------------~-------~--~----~ To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
