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  "Date": "2025-12-30",
  "Title": "Visualizing Data using a 3D Printer",
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  "Description": "Converts data to STL (stereolithography) files that can be\nused to feed a 3-dimensional printer.  The 3-dimensional output\nfrom a function can be materialized into a solid surface in a\nplastic material, therefore allowing more detailed examination.\nThere are many possible uses for this new tool, such as to\nexamine mathematical expressions with very irregular shapes, to\naid teaching people with impaired vision, to create raised\nrelief maps from digital elevation maps (DEMs), to bridge the\ngap between mathematical tools and rapid prototyping, and many\nmore.  Ian Walker created the function r2stl() and Jose' Gama\nassembled the package.",
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