Ed Davies's Homepage


Any activity around here tends to happen on my blog.

Off-Grid House

Here are a few pages about an off-grid house I plan to build. There are also a bunch of blog posts on the subject.

Bumps Charts

I did some XSLT to produce SVG graphs of scores in gliding competitions. Here are a few pages related to those:

During 2008 I helped Melissa Jenkins integrate the XSLT for bumps charts into her OnGlide system. Here are the 2009 Dunstable Regionals Blue & Red classes. It's neat that she serves the SVG version to the main modern standards-compliant browsers (i.e., pretty much all except Internet Explorer). This allows a bit of CSS hover styling to highlight (rather unsubtly but smaller effects didn't show very well sometimes) the score lines for the entries when you hover the cursor across the names.

One day I'd like to do a re-implementation of this stuff using client-side JavaScript to create the charts from raw data (e.g., excerpts from the SeeYou XML file) and display them a bit more interactively - allowing the user to choose the options currently chosen on the server. For portability across browsers I'll probably use Raphaƫl. Well, actually... and in more detail.

Booker Gliding Club Accounts System (Max2)

In late 1993/early 1994 I wrote an accounts system for Booker Gliding Club and I've been, to a greater or lesser degree, supporting and extending it since. I've put the manual here for easy reference of an up-to-date copy by anybody with an interest in the matter.


A few pages about various observations and things. Also, blog pages tagged Astronomy.

EW Avionics

These are items of interest to those owning or using the earlier versions of the EW Avionics barographs and flight data recorders but which are not necessarily officially supported by EW.