Display labels by fewer decimals

[bshor]

trafficstars

I'd like to display slopegraphs with points with only a single decimal, so I use decimal=1 in my specification. But if I do, I get overlap of labels (eg VT and CT below) which I wouldn't get if used decimal=2. But using the latter is so untidy! Is there any way to get the benefit of the latter without displaying more than one significant digit?

One Significant Digit

Two Significant Digits

[leeper]

This should be possible. Just need to drop rounding in two places:

https://github.com/leeper/slopegraph/blob/master/R/slopegraph.R#L110

https://github.com/leeper/slopegraph/blob/master/R/ggslopegraph.R#L104

[ibecav]

@leeper may want to think about using signif rather than rounding.

@bshor I just recently added ggslopegraph2 to the package and it uses some different approaches to this problem. You're welcome to give it a try if you like. This should work for you and includes the data you provided in your example.

devtools::install_github("leeper/slopegraph")
library(slopegraph)

bshor <- structure(list(Year = structure(c(1L, 2L, 3L, 4L, 5L, 6L, 1L, 
                                  2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 
                                  6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 
                                  4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 
                                  2L, 3L, 4L, 5L, 6L), .Label = c("1996", "2000", "2004", "2008", 
                                                                  "2014", "2017"), class = "factor"), 
                        State = structure(c(9L, 9L, 9L, 9L, 9L, 9L, 6L, 6L, 6L, 6L, 6L, 6L, 2L, 2L, 2L, 2L, 2L, 2L, 
                                            8L, 8L, 8L, 8L, 8L, 8L, 10L, 10L, 10L, 10L, 10L, 10L, 1L, 1L, 
                                            1L, 1L, 1L, 1L, 7L, 7L, 7L, 7L, 7L, 7L, 3L, 3L, 3L, 3L, 3L, 3L, 
                                            4L, 4L, 4L, 4L, 4L, 4L, 5L, 5L, 5L, 5L, 5L, 5L), .Label = c("CT", "MA", "MD", "ME", "NH", "NJ", "NY", "PA", "RI", "VT"), class = "factor"), 
                       Pct = c(0.61, 0.51, 0.46, 0.51, 0.61, 0.78, 0.94, 0.95, 0.94, 
                               0.97, 0.97, 0.98, 0.98, 0.99, 0.99, 0.97, 0.97, 0.98, 1.26, 
                              1.23, 1.23, 1.26, 1.3, 1.4, 1.32, 1.27, 1.3, 1.13, 1.28, 
                              1.71, 1.32, 1.36, 1.33, 1.33, 1.31, 1.33, 1.44, 1.37, 1.49, 
                              1.38, 1.5, 1.57, 1.46, 1.7, 1.71, 1.8, 1.92, 2.07, 1.56, 
                              1.45, 1.56, 1.57, 1.78, 1.95, 1.83, 1.79, 1.84, 1.82, 1.79, 
                              1.71)), row.names = c(NA, -60L), class = "data.frame")

ggslopegraph2(bshor, Year, Pct, State, 
              title = "Display labels by fewer decimals #16", 
              linecolor = "light gray",
              subtitle = "With defaults")
bshor$rPct <- signif(bshor$Pct, 2)
ggslopegraph2(bshor, Year, rPct, State, 
              title = "Display labels by fewer decimals #16", 
              linecolor = "light gray",
              subtitle = "With signif digits = 2")

[bshor]

Going to give this a shot and report back!