diff --git a/lib/matplotlib/backends/qt_editor/figureoptions.py b/lib/matplotlib/backends/qt_editor/figureoptions.py
index c744ccc3ca59..c36bbeb62641 100644
--- a/lib/matplotlib/backends/qt_editor/figureoptions.py
+++ b/lib/matplotlib/backends/qt_editor/figureoptions.py
@@ -164,6 +164,12 @@ def prepare_data(d, init):
mappabledata.append((
'Interpolation',
[mappable.get_interpolation(), *interpolations]))
+
+ interpolation_stages = ['data', 'rgba']
+ mappabledata.append((
+ 'Interpolation stage',
+ [mappable.get_interpolation_stage(), *interpolation_stages]))
+
mappables.append([mappabledata, label, ""])
# Is there a scalarmappable displayed?
has_sm = bool(mappables)
@@ -227,9 +233,11 @@ def apply_callback(data):
# Set ScalarMappables.
for index, mappable_settings in enumerate(mappables):
mappable = labeled_mappables[index][1]
- if len(mappable_settings) == 5:
- label, cmap, low, high, interpolation = mappable_settings
+ if len(mappable_settings) == 6:
+ label, cmap, low, high, interpolation, interpolation_stage = \
+ mappable_settings
mappable.set_interpolation(interpolation)
+ mappable.set_interpolation_stage(interpolation_stage)
elif len(mappable_settings) == 4:
label, cmap, low, high = mappable_settings
mappable.set_label(label)
diff --git a/lib/matplotlib/image.py b/lib/matplotlib/image.py
index 73738fe3bdbe..3741c2cdecb3 100644
--- a/lib/matplotlib/image.py
+++ b/lib/matplotlib/image.py
@@ -773,6 +773,14 @@ def set_interpolation(self, s):
self._interpolation = s
self.stale = True
+ def get_interpolation_stage(self):
+ """
+ Return when interpolation happens during the transform to RGBA.
+
+ One of 'data', 'rgba'.
+ """
+ return self._interpolation_stage
+
def set_interpolation_stage(self, s):
"""
Set when interpolation happens during the transform to RGBA.
diff --git a/lib/matplotlib/image.pyi b/lib/matplotlib/image.pyi
index 20fdc3ff946a..4b684f693845 100644
--- a/lib/matplotlib/image.pyi
+++ b/lib/matplotlib/image.pyi
@@ -89,6 +89,7 @@ class _ImageBase(martist.Artist, cm.ScalarMappable):
def get_shape(self) -> tuple[int, int, int]: ...
def get_interpolation(self) -> str: ...
def set_interpolation(self, s: str | None) -> None: ...
+ def get_interpolation_stage(self) -> Literal["data", "rgba"]: ...
def set_interpolation_stage(self, s: Literal["data", "rgba"]) -> None: ...
def can_composite(self) -> bool: ...
def set_resample(self, v: bool | None) -> None: ...
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