.. currentmodule:: altair

.. _user-guide-square-marks:

Square
~~~~~~
``square`` mark is similar to ``point`` mark, except that (1) the ``shape`` value is always set to ``square`` (2) they are filled by default.

Square Mark Properties
----------------------
A ``square`` mark definition can contain any :ref:`standard mark properties <mark-properties>`
and the following special properties:

.. altair-object-table:: altair.MarkDef
   :properties: size

Scatter Plot with Square
------------------------
.. altair-plot::
   import altair as alt
   from altair.datasets import data

   source = data.cars()

   alt.Chart(source).mark_square().encode(
      x="Horsepower:Q",
      y="Miles_per_Gallon:Q",
   )
