March 2018
Intermediate to advanced
528 pages
13h 2m
Portuguese (Portugal, Brazil)
Content preview from R para Data Science
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456 | Capítulo 22: Gráficos para Comunicação com ggplot2
É muito útil fazer gráficos de transformações da sua variável. Por exemplo, como
observamos em “Por que Diamantes de Baixa Qualidade São Mais Caros?”, na página
376, é mais fácil ver o relacionamento preciso entre carat e price se os transformar-
mos em logaritmo:
ggplot( diamonds, aes( carat, price )) +
geom_bin2d()
ggplo
t( diamonds, aes( log10( carat ), log10( price ))) +
geom_bin2d
()
Contudo, a desvantagem dessa transformação é que os eixos estão agora rotulados com
os valores transformados, dificultando a interpretação do gráfico. Em vez de fazer a
transformação no mapeamento estét ...
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