Area#
An area chart shows a filled region between a line and the x-axis.
gufo.chart(df).area("x", "y").show()
Stacked area (wide-form)#
Pass a list of column names for a stacked area chart — no reshaping needed.
gufo.chart(df).area("x", ["series_a", "series_b"]).show()
Color and transparency#
# Literal color with custom alpha
gufo.chart(df).area("x", "y", color="steelblue", alpha=0.3).show()
# Grouped by category
gufo.chart(df).area("x", "y", color="category").show()
Error band#
Pass y_error to draw a lighter fill band around the top edge of the area.
gufo.chart(df).area("x", "y", y_error="y_std").show()