Physical units

Author: lukelbd

docs/tight.ipynb

@@ -107,7 +107,7 @@
    "source": [
     "The figure layout can also be configured manually. ProPlot supports *arbitrary physical units* for controlling the figure `width` and `height`; the reference subplot `axwidth` and `axheight`; the gridspec spacing values `left`, `right`, `bottom`, `top`, `wspace`, and `hspace`; and in a few other places.\n",
     "\n",
-    "If a sizing argument is numeric, the units are inches or points, and if string, the units are interpreted by `~proplot.utils.units`. A table of acceptable units is found in the `~proplot.utils.units` documentation. They include centimeters, millimeters, pixels, and light years (because why not?)."
+    "If a sizing argument is numeric, the units are inches or points, and if string, the units are interpreted by `~proplot.utils.units`. A table of acceptable units is found in the `~proplot.utils.units` documentation. They include centimeters, millimeters, pixels, em-squares, points, and picas."
    ]
   },
   {

docs/why.rst

@@ -429,9 +429,9 @@ ProPlot introduces the physical units engine `~proplot.utils.units`
 for interpreting `figsize`, `width`, `height`, `axwidth`, `axheight`,
 `left`, `right`, `top`, `bottom`, `wspace`, `hspace`, and arguments
 in a few other places. Acceptable units include inches, centimeters,
-millimeters, `points <https://en.wikipedia.org/wiki/Point_(typography)>`__,
-pixels, em-heights, and light years (because
-why not?). Em-heights are particularly useful, as labels already
+millimeters, pixels, `points <https://en.wikipedia.org/wiki/Point_(typography)>`__,
+`picas <https://en.wikipedia.org/wiki/Pica_(typography)>`__, `em-heights <https://en.wikipedia.org/wiki/Em_(typography)>`__, and `light years <https://en.wikipedia.org/wiki/Light-year>`__ (because why not?).
+Em-heights are particularly useful, as labels already
 present can be useful *rulers* for figuring out the amount
 of space needed.