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pythonrmatplotlibggplot2python-ggplot
Alex I
Alex I

Reputation: 20287

Matplotlib equivalent to ggplot geom_ribbon?

I would like to reproduce the ggplot style of showing a confidence interval around a value with a ribbon, like geom_ribbon or geom_smooth.

I tried calculating the confidence interval separately and plotting with fill_between() which is close but doesn't seem exactly right. How can the x axis be the style that comes from plot_date() while using fill_between()? What about smoothing of the ribbon?

Example output:

enter image description here enter image description here

The ggplot code looks like this (several found examples):

qplot(wt, mpg, data=mtcars, colour=factor(cyl)) +
  geom_smooth(aes(ymin = lcl, ymax = ucl), data=grid, stat="identity")

ggplot(answers.overall, aes(Date, Answers)) + geom_line() + 
  geom_smooth(method="loess") + theme(axis.text.x = element_text(angle = 45, hjust = 1))

Upvotes: 3

Views: 3334

Answers (1)

Steve S
Steve S

Reputation: 1053

Is there a reason why you can't use ggplot for Python? Because that would really simplify things a lot:

import ggplot as gg

mtcars = gg.mtcars
gg.qplot(mtcars.wt, mtcars.mpg) + gg.geom_smooth(color="blue")

Upvotes: 3

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