Issue on page /data-visualise.html #24

In 2.1.1. Prerequisites, the instruction is to run pip install letsplot. It is actually pip install lets-plot.

In 2.7. Common Problems, a line is One common problem when creating letsplot graphics is to put the + in the wrong place: it has to come at the end of the line, not the start. But both ways work. For example, this works:

(
    ggplot(penguins, aes(x="flipper_length_mm", y="body_mass_g"))
    + geom_point(aes(color="species", shape="species"))
    + facet_wrap(facets="island")
)

and this works too:

(
    ggplot(penguins, aes(x="flipper_length_mm", y="body_mass_g")) +
    geom_point(aes(color="species", shape="species")) +
    facet_wrap(facets="island")
)