Added two new coordinate systems: coord_polar and coord_radial.

doc/.gitignore

@@ -13,3 +13,5 @@ objects.json
 objects.txt
 objects.inv
 gallery/thumbnails
+
+**/*.quarto_ipynb

doc/_quartodoc.yml

@@ -403,13 +403,25 @@ quartodoc:
       contents:
         - aspect_ratio
         - axis_line
+        - axis_line_r
+        - axis_line_r_end
+        - axis_line_r_start
+        - axis_line_theta
+        - axis_line_theta_inside
+        - axis_line_theta_outside
         - axis_line_x
         - axis_line_x_bottom
         - axis_line_x_top
         - axis_line_y
         - axis_line_y_left
         - axis_line_y_right
         - axis_text
+        - axis_text_r
+        - axis_text_r_end
+        - axis_text_r_start
+        - axis_text_theta
+        - axis_text_theta_inside
+        - axis_text_theta_outside
         - axis_text_x
         - axis_text_x_bottom
         - axis_text_x_top
@@ -419,19 +431,35 @@ quartodoc:
         - axis_ticks
         - axis_ticks_length
         - axis_ticks_length_major
+        - axis_ticks_length_major_r
+        - axis_ticks_length_major_theta
         - axis_ticks_length_major_x
         - axis_ticks_length_major_y
         - axis_ticks_length_minor
+        - axis_ticks_length_minor_r
+        - axis_ticks_length_minor_theta
         - axis_ticks_length_minor_x
         - axis_ticks_length_minor_y
         - axis_ticks_major
+        - axis_ticks_major_r
+        - axis_ticks_major_r_end
+        - axis_ticks_major_r_start
+        - axis_ticks_major_theta
+        - axis_ticks_major_theta_inside
+        - axis_ticks_major_theta_outside
         - axis_ticks_major_x
         - axis_ticks_major_x_bottom
         - axis_ticks_major_x_top
         - axis_ticks_major_y
         - axis_ticks_major_y_left
         - axis_ticks_major_y_right
         - axis_ticks_minor
+        - axis_ticks_minor_r
+        - axis_ticks_minor_r_end
+        - axis_ticks_minor_r_start
+        - axis_ticks_minor_theta
+        - axis_ticks_minor_theta_inside
+        - axis_ticks_minor_theta_outside
         - axis_ticks_minor_x
         - axis_ticks_minor_x_bottom
         - axis_ticks_minor_x_top
@@ -565,6 +593,8 @@ quartodoc:
         - coord_equal
         - coord_fixed
         - coord_flip
+        - coord_polar
+        - coord_radial
         - coord_trans
 
     - title: Composing Plots

doc/changelog.qmd

@@ -11,6 +11,10 @@ title: Changelog
   transformation of the primary axis with [](:class:`~plotnine.sec_axis`), or as a
   mirror of the primary axis with [](:func:`~plotnine.dup_axis`).
 
+- [](:class:`~plotnine.coord_radial`) can now draw an angular scale's secondary
+  axis around the inner rim. Add a [](:class:`~plotnine.sec_axis`) to the scale
+  and set `inner_radius > 0`.
+
 - Added [](:class:`~plotnine.composition.plot_layout`) with which you can customise the
   layout of plots in composition.
 

plotnine/__init__.py

@@ -20,6 +20,8 @@
     coord_equal,
     coord_fixed,
     coord_flip,
+    coord_polar,
+    coord_radial,
     coord_trans,
 )
 from .facets import (
@@ -291,6 +293,8 @@
     "coord_equal",
     "coord_fixed",
     "coord_flip",
+    "coord_polar",
+    "coord_radial",
     "coord_trans",
     "dup_axis",
     "element_blank",