diff --git a/tests/examples_arguments_syntax/scatter_with_shaded_area.py b/tests/examples_arguments_syntax/scatter_with_shaded_area.py new file mode 100644 index 000000000..3096e420b --- /dev/null +++ b/tests/examples_arguments_syntax/scatter_with_shaded_area.py @@ -0,0 +1,48 @@ +""" +Scatter Plot with Shaded Area +----------------------------- +This example shows a scatter plot with shaded area, +constructed using :ref:`area mark ` and :ref:`rect mark `. +""" +# category: scatter plots + +import altair as alt +import pandas as pd +import numpy as np + +data = pd.DataFrame({ + "x": np.random.uniform(-4, 5, size=50), + "y": np.random.uniform(2, 5, size=50), +}) + +rect_data = pd.DataFrame({ + "x1": [-2], + "x2": [-1] +}) + +# define this interval between y = -x and y = -x +df = pd.DataFrame({ + "x": range(7), + "ymin": range(7), + "ymax": range(1,8) +}) + +points = alt.Chart(data).mark_point().encode( + x="x", + y="y" +) + +interval = alt.Chart(df).mark_area(opacity=0.3).encode( + x="x:Q", + y="ymin:Q", + y2="ymax:Q" +) + + +rect = alt.Chart(rect_data).mark_rect(opacity=0.3).encode( + x="x1", + x2="x2", + color=alt.ColorValue("#FF0000") +) + +points + interval + rect \ No newline at end of file