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Fix minor formatting issues in scales-position.qmd #421

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Fix minor formatting issues in scales-position.qmd #421

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7 changes: 3 additions & 4 deletions scales-position.qmd
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Expand Up @@ -10,7 +10,7 @@ status("polishing")

Position scales are used to control the locations of visual entities in a plot, and how those locations are mapped to data values.
Every plot has two position scales, corresponding to the x and y aesthetics.
In most cases this is clear in the plot specification, because the user explicitly specifies the variables mapped to x and y explicitly.
In most cases this is clear in the plot specification, because the user explicitly specifies the variables mapped to x and y.
However, this is not always the case.
Consider this plot specification:

Expand Down Expand Up @@ -45,7 +45,7 @@ The chapter is organised into four main sections:

The most common continuous position scales are the default `scale_x_continuous()` and `scale_y_continuous()` functions.
In the simplest case they map linearly from the data value to a location on the plot.
There are several other position scales for continuous variables---`scale_x_log10()`, `scale_x_reverse()`, etc---most of which are convenience functions used to provide easy access to common transformations, discussed in in @sec-scale-transformation.
There are several other position scales for continuous variables---`scale_x_log10()`, `scale_x_reverse()`, etc---most of which are convenience functions used to provide easy access to common transformations, discussed in @sec-scale-transformation.
\indexf{scale\_x\_continuous}

### Limits {#sec-position-continuous-limits}
Expand Down Expand Up @@ -735,8 +735,7 @@ ggplot(mpg, aes(x = drv, y = hwy)) + geom_boxplot(width = .4)

\index{Axis!labels} \index{Legend!keys}

The limits, breaks.
and labels for a discrete position scale can be set using the `limits`, `breaks`, and `labels` arguments.
The limits, breaks, and labels for a discrete position scale can be set using the `limits`, `breaks`, and `labels` arguments.
For the most part these behave identically to the corresponding arguments for numeric scales (@sec-numeric-position-scales), though there are some differences.
For example, the limits of a discrete scale are not defined in terms of endpoints, but instead correspond to the set of allowable values for that variable.
Accordingly, ggplot2 expects that the `limits` of a discrete scale should be a character vector that enumerates all possible values in the order they should appear:
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