Add missing scale_stroke_identity

Author: has2k1

doc/_quartodoc.yml

@@ -252,6 +252,7 @@ quartodoc:
         - scale_linetype_identity
         - scale_shape_identity
         - scale_size_identity
+        - scale_stroke_identity
 
     - subtitle: Linetype Scales
       options: *no-members

doc/changelog.qmd

@@ -5,6 +5,10 @@ title: Changelog
 ## v0.15.1
 (not-yet-released)
 
+### New
+
+- Added [](:class:`~plotnine.scale_stroke_identity`) which was conspicuously missing!
+
 ### Bug Fixes
 
 - Fixed labels set with the `labs` call so that they are only ever overwritten

plotnine/__init__.py

@@ -198,6 +198,7 @@
     scale_size_radius,
     scale_stroke,
     scale_stroke_continuous,
+    scale_stroke_identity,
     scale_x_continuous,
     scale_x_date,
     scale_x_datetime,
@@ -441,6 +442,7 @@
     "scale_size_radius",
     "scale_stroke",
     "scale_stroke_continuous",
+    "scale_stroke_identity",
     "scale_x_continuous",
     "scale_x_date",
     "scale_x_datetime",

plotnine/scales/__init__.py

@@ -74,6 +74,7 @@
     scale_linetype_identity,
     scale_shape_identity,
     scale_size_identity,
+    scale_stroke_identity,
 )
 
 # linetype
@@ -217,6 +218,7 @@
     "scale_linetype_identity",
     "scale_shape_identity",
     "scale_size_identity",
+    "scale_stroke_identity",
     # manual
     "scale_color_manual",
     "scale_colour_manual",

plotnine/scales/scale_identity.py

@@ -106,6 +106,17 @@ class scale_size_identity(
     guide: Literal["legend"] | None = None
 
 
+@dataclass
+class scale_stroke_identity(MapTrainMixin, scale_discrete):
+    """
+    No stroke scaling
+    """
+
+    _aesthetics = ["stroke"]
+    _: KW_ONLY
+    guide: Literal["legend"] | None = None
+
+
 # American to British spelling
 @alias
 class scale_colour_identity(scale_color_identity):