EXCEL GRAPH COURSE :-
My Excel version (pictured in the animated GIF above) seems to work well in Excel 2002, 2007, and 2010, although I had to add more formulas just to support Excel 2002.
The chart is an XY Scatter type using inserted Excel shapes as the markers. When using compound shapes as markers, it is very frustrating because Excel changes the shape ever so slightly when copied to the chart's data series. I experienced the exact same frustration when I was crafting celtic muse and those tiles are much simpler than these. It took quite a bit of trial and error to get them working as well as they are. It's not perfect, but it's close enough! I've included the tiles below the chart if you want to have a whack at it.
For such a simple display, this is a pretty advanced Excel chart and well worth your study time.THIS ALL GIF FILE CREATED BY EXCEL FILE