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Diagrams, a postscript
Having mentioned considering Cairo for diagram generation I thought that it may be usefully illustrative to share a couple of past diagrams representing those I have previously generated via PostScript® code:
shows a simple arrangement of some sensors and their view of some targets.
shows an undersea map where the marked regions have a specific magnetic field strength: the meandering black lines are an isopleth. Both diagrams were generated from data structures from my software: for the field map the grayscale is achieved by shaded fills of a mesh of triangles whose vertices are sample points. I did Delaunay triangulation in Haskell which output shfill commands for the rendering.
shows a simple arrangement of some sensors and their view of some targets.
shows an undersea map where the marked regions have a specific magnetic field strength: the meandering black lines are an isopleth. Both diagrams were generated from data structures from my software: for the field map the grayscale is achieved by shaded fills of a mesh of triangles whose vertices are sample points. I did Delaunay triangulation in Haskell which output shfill commands for the rendering.