objectif

Composer des graphiques avec l’API à la ggplot2.

code minimal

from plotnine import ggplot, aes, geom_point
import pandas as pd

df = pd.DataFrame({"x":[1,2,3], "y":[3,2,1]})
p = ggplot(df, aes("x","y")) + geom_point()
print("plotnine ok")

utilisation

from plotnine import ggplot, aes, geom_line
import pandas as pd

df = pd.DataFrame({"x":[1,2,3], "y":[1,4,9]})
p = ggplot(df, aes("x","y")) + geom_line()
print("line ok")

variante(s) utile(s)

from plotnine import ggplot, aes, geom_bar
import pandas as pd

df = pd.DataFrame({"cat":["a","b","c"], "v":[3,1,2]})
p = ggplot(df, aes("cat","v")) + geom_bar(stat="identity")
print("bar ok")

notes

• Export via p.save('f.png'). Nécessite matplotlib en backend.