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Removing baseline from geom_histogram in ggplot2 via rpy2?

I am plotting a histogram with ggplot2 through rpy2 like this:

p = ggplot2.ggplot(df) + \
    ggplot2.aes_string(x="x", colour="sample") + \
    ggplot2.facet_grid(Formula("sample ~ .")) + \
    ggplot2.geom_histogram(binwidth=0.3, fill="white")

It works great except geom_histogram

, for example geom_density

, it adds a "base line" at the bottom of the histogram that I would like to remove. How do I remove this line? Here is a picture of the line I am referring to annotated with an arrow. Thank you. enter image description here

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1 answer


This comes from the edge of the panel.



Just remove colour = "sample"

.

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