The size-category type draws a legend based on categorical data and geometry type using either the size (default) or stroke_width property of your visualization.
To view available legend parameters, run help(size_category_legend)
In this example, the size category legend reads from the size property to draw a legend with symbol sizes assigned to categories of cities.
In [1]:
from cartoframes.auth import set_default_credentials
from cartoframes.viz import Layer, size_category_style, size_category_legend
set_default_credentials('cartoframes')
In [2]:
Layer(
'spain_populated_places',
size_category_style(
'featurecla',
cat=['Populated place','Admin-1 capital', 'Admin-0 capital'],
size_range=[3,7,15]
),
legends=size_category_legend(
title='Spanish Cities',
footer='Source: Natural Earth'
)
)
Out[2]: