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Default forecast_chart width to container for responsive sizing #189

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Merged
koaning merged 1 commit into from
Mar 27, 2026
Merged

Default forecast_chart width to container for responsive sizing #189

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4 changes: 1 addition & 3 deletions demos/forecast_chart.py
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Original file line number Diff line number Diff line change
Expand Up @@ -86,7 +86,7 @@ def _(np, pl):

@app.cell
def _(AltairWidget):
widget = AltairWidget(width=600, height=400)
widget = AltairWidget(height=400)
return (widget,)


Expand Down Expand Up @@ -115,7 +115,6 @@ def _(df, fit_window, forecast_chart, projection_days, widget):
fit_window=fit_window.value,
projection_days=projection_days.value,
title="Synthetic metric forecast",
width=600,
)
return (time,)

Expand Down Expand Up @@ -152,7 +151,6 @@ def _(df, fit_window, forecast_chart, projection_days, time):
fit_window=fit_window.value,
projection_days=projection_days.value,
title="Synthetic metric forecast (plain)",
width=600,
)
return

Expand Down
7 changes: 3 additions & 4 deletions wigglystuff/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -108,7 +108,7 @@ def forecast_chart(
fit_window: int = 180,
projection_days: int = 365,
title: str | None = None,
width: int | None = None,
width: int | str | None = None,
height: int = 400,
):
"""Create a time series chart with an exponential forecast.
Expand All @@ -123,7 +123,7 @@ def forecast_chart(
fit_window: Number of most-recent data points to use for the fit.
projection_days: How many days to project into the future.
title: Optional chart title.
width: Chart width in pixels. If None, uses Altair default.
width: Chart width in pixels, or "container" for responsive. Defaults to "container".
height: Chart height in pixels (default 400).

Returns:
Expand Down Expand Up @@ -229,10 +229,9 @@ def forecast_chart(

props = {
"height": height,
"width": width if width is not None else "container",
"usermeta": {"embedOptions": {"actions": False}},
}
if width is not None:
props["width"] = width
if title:
props["title"] = title

Expand Down
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