I have never used the drawing packages available to TeX but they seem like the ideal solution for creating re-usable technical drawings, and might be better than spending a week in inkscape (I'm terrible at inkscape). This time I want to draw an explanatory diagram of a Kohonen network / SOM feature map, showing the input nodes and a 2D map. I have seen one that I like, but have no idea how I would come close to making it.
Here is the figure, it is an SVG:
Inkscape provides a conversion to PSTricks, but it is overwhelming considering the repeated hexagonal shapes of the feature map. Is it a diagram that lends itself to PGF/Tikz?