CODEWITHSUNDEEP
pythonggplot2data-visualizationplotnine
lll
lll

Reputation: 1109

python plotnine: labeller in facet_grid not changing the facet title

I want to change the facet title in plotnine (python ggplot) when 2 variables are used in faceting WITHOUT changing the data itself.

Example: using mpg data 

 pretty = p9.ggplot(data=mpg, mapping = p9.aes(x='hwy', y='displ'))+ p9.geom_point(alpha = 0.6)
 pretty + p9.facet_grid("cyl~year")

I have the following plot:

enter image description here

I want to change the year to "yr 1999" and "yr 2008" and the cly titles to "c4", "c5","c6", "c8". But when I used the labeller in facet_grid:

  pretty + p9.facet_grid("cyl~year", labeller = ["c4", "c5","c6", "c8", "yr 1999", "yr 2008"])

the plot is not changed. I have tried to google around but did not find answer for changing faceting titles with two variables.

Upvotes: 2

Views: 2189

Answers (1)

has2k1
has2k1

Reputation: 2365

See the documentation for the labeller function.

import plotnine as p9
from plotnine.data import mpg

def col_func(s):
    return 'yr ' + s

pretty = p9.ggplot(data=mpg, mapping = p9.aes(x='hwy', y='displ'))+ p9.geom_point(alpha = 0.6)
pretty + p9.facet_grid("cyl~year", labeller=p9.labeller(cols=col_func))

enter image description here

Upvotes: 2

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