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Update area.rst #3064

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May 19, 2023
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Update area.rst #3064

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3 changes: 1 addition & 2 deletions doc/user_guide/marks/area.rst
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Expand Up @@ -174,8 +174,7 @@ Adding the ``interactive`` method allows for zooming and panning the x-scale.

Ranged Area
^^^^^^^^^^^
Specifying ``x2`` or ``y2`` for the quantitative axis of area marks produce ranged areas. For example, we can use ranged area with the ``ci0`` and ``ci0``
:ref:`aggregation operators <encoding-aggregates>` to highlight 95% confidence interval of a line chart that shows mean values over time.
Specifying ``X2`` or ``Y2`` for the quantitative axis of area marks produce ranged areas. For example, we can use ranged area to highlight the mininium and maximum measured temperatures over time, aggregated by ``monthdate``.

.. altair-plot::
import altair as alt
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