[Moose-dev] Matrix sunburst: increasing the separation between arcs

Hi, Pair programming with Milton at Smalltalks 2015, we (well mostly he) came with what I call a "matrix sunburst" that shows a sunburst diagram using a matrix instead of a tree as data source (the clever hack of Milton was to convert the data in the matrix to a tree with only one child on any branch after the first one!). The inspiration was taken from [1] and the idea was from a friend who want to use this kind of matrix alike sunburst to compare public medicine information. [1] http://www.theguardian.com/world/interactive/2012/may/08/gay-rights-united-… With this I can create thinks like this: But to get a more readable visualization, I would like to make two things: a. Increase the empty space between arcs, not like the current radial strategy, but more like the graphic at [1]. For this we thought in adding a RTEdge with the same color as the background. How can I calculate the position of every RTEdge at the final of each arch in the sunburst? b. I would like to keep each ring of the same size instead of making them narrower as the become more away of the center. It this possible? c. Finally I have created RTSunburstBuilder>>exploreMatrix: aMatrix coloredWith: aColorPalette in my own image, because I think that is the best place it can be to be reused in my own visualizations. Is this a good practice? Can I share this code back with the Roassal project? How? (hopefully I will not need to learn git and its gratituous complexity). Cheers, Offray