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Add splines argument to plot_model and model_to_dot #22277

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Merged
hertschuh merged 2 commits into from
Mar 18, 2026
+10 −1
Merged

Add splines argument to plot_model and model_to_dot #22277

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7eece0c
fix(utils): use curved splines for LR/RL rankdir in plot_model
rstar327 Feb 24, 2026
24bc361
feat(visualization): add splines argument to plot_model and model_to_dot
rstar327 Mar 17, 2026
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11 changes: 10 additions & 1 deletion keras/src/utils/model_visualization.py
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,7 @@ def model_to_dot(
subgraph=False,
show_layer_activations=False,
show_trainable=False,
splines="ortho",
**kwargs,
):
"""Convert a Keras model to dot format.
Expand All @@ -222,6 +223,9 @@ def model_to_dot(
show_layer_activations: Display layer activations (only for layers that
have an `activation` property).
show_trainable: whether to display if a layer is trainable.
splines: Controls how edges are drawn. Defaults to `"ortho"`
(right-angle lines). Other options include `"curved"`,
`"polyline"`, `"spline"`, and `"line"`.

Returns:
A `pydot.Dot` instance representing the Keras model or
Expand Down Expand Up @@ -257,7 +261,7 @@ def model_to_dot(
dot.set("rankdir", rankdir)
dot.set("concentrate", True)
dot.set("dpi", dpi)
dot.set("splines", "ortho")
dot.set("splines", splines)
dot.set_node_defaults(shape="record")

if kwargs.pop("layer_range", None) is not None:
Expand Down Expand Up @@ -414,6 +418,7 @@ def plot_model(
dpi=200,
show_layer_activations=False,
show_trainable=False,
splines="ortho",
**kwargs,
):
"""Converts a Keras model to dot format and save to a file.
Expand Down Expand Up @@ -444,6 +449,9 @@ def plot_model(
show_layer_activations: Display layer activations (only for layers that
have an `activation` property).
show_trainable: whether to display if a layer is trainable.
splines: Controls how edges are drawn. Defaults to `"ortho"`
(right-angle lines). Other options include `"curved"`,
`"polyline"`, `"spline"`, and `"line"`.

Returns:
A Jupyter notebook Image object if Jupyter is installed.
Expand Down Expand Up @@ -497,6 +505,7 @@ def plot_model(
dpi=dpi,
show_layer_activations=show_layer_activations,
show_trainable=show_trainable,
splines=splines,
)
to_file = str(to_file)
if dot is None:
Expand Down
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