Una gran metáfora visual para representar la estructura es el gráfico circular. Lo dividimos en porciones y examinamos quién se ha llevado el trozo más grande o, por ejemplo, cómo se reparten la mitad del mercado los agentes del mercado. El énfasis no está en la comparación cuantitativa (mayor o menor), como en los gráficos de barras, sino en la parte del todo (porcentajes).
Un gráfico de donuts sirve para lo mismo que un gráfico circular, construido con los mismos parámetros, con la única diferencia del agujero (o propiamente dicho, el "agujero del donut") en el centro(Figura 4-1, derecha). En este capítulo, te proporcionaremos una guía para un gráfico circular, pero puedes configurar un gráfico donut de la misma manera.
Figura 4-1. Gráfico circular (izquierda) y gráfico de donuts (derecha)
¿Para qué sirve el agujero? Para nada en especial. Podemos poner ahí el valor total, pero no existe esa opción estándar. Podemos obtener este resultado combinando dos visuales: gráfico de donuts y tarjeta con valor total(Figura 4-2). Pero no compliquemos las cosas por ahora y mejor entendamos la configuración básica.
Figura 4-2. ...
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