Set significant figures for scale_x_tufte/scale_y_tufte about ggthemes HOT 4 CLOSED

I'd be happy to take a stab at implementing this, what sort of option would you like to see, specifically? Would it maybe just be better to manually specify the breaks to be at even numbers using the breaks parameter?

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The problem with setting the breaks to even numbers is it gets rid of the specific minimum/maximum of the Tufte Breaks.

I’ve been having a bit of a play, but am not really a proficient enough programmer to be able to implement this. I think that two things would be useful:

1. Setting the number of significant figures for the tick labels - essentially just applying signif(,digits=x) to the output
2. Having the option to apply prettyNum() to the output to get rid of the (ugly) trailing zeroes.

A.

On 13 Aug 2015, at 16:06, Brent Cohn [email protected] wrote:

I'd be happy to take a stab at implementing this, what sort of option would you like to see, specifically? Would it maybe just be better to manually specify the breaks to be at even numbers using the breaks parameter?

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Reply to this email directly or view it on GitHub #42 (comment).

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You can get smarter by passing the function smart_digits_format to labels for the tufte scale (or any scale). It's in the package but I forgot to include any examples.

If you have this, the formatting of the labels is poor.

p <- ggplot(mtcars, aes(wt, mpg)) +
   geom_point()  +
   geom_rangeframe()  +
   theme_tufte() 

p + scale_x_tufte() + scale_y_tufte()

But, adding the option labels = smart_digits_format() and it rounds the min/max labels to reasonable values.

p + scale_x_tufte(labels = smart_digits_format()) +
   scale_y_tufte(labels = smart_digits_format())

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I'm leaving this open to remind myself to

• Add smart_digits_format example
• Make smart_digits_format the default for the Tufte scales.

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