scales

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This PR closes #322 by supplying derivatives of transformation functions and inverses where possible. Specifically, it: - Adds two optional, may-be-`NULL` fields to transform objects: `$d_transform` and `$d_inverse`. These functions...

mjskay

Hey. I was just testing out the new `scale_cut` argument in version 1.2.0. The documentation suggests a named vector such as ` c(a = 100, b = 1000)` can be...

PaulC91

tickmark/break calculations with exp_trans, probability_trans fail often

10

Some ranges seem to break the calculation of the breaks/tickmarks for these transformed axes: It works for `y

fabian-s

Rename `label_dollar` to `label_currency`

1

Shouldn't `label_dollar` be renamed `label_currency`? I know it is functionally the same, but such a name would instantly tell the programmer that multiple currencies are probably supported, prompting one to...

pwseo

There currently isn't any break, label, or trans functions for difftime objects. There are some excellent functions that do this for difftimes in the **bench** package that could be used...

paleolimbot

Feature request (and offer for help): optionally supply derivatives of transforms and inverses

2

Something that comes up regularly when visualizing analytical distributions on transformed scales is the need to correct the density function for the scale transformation (the so-called "Jacobian correction"), which requires...

mjskay

Add inverse hyperbolic sine transformation

1

Sometimes it's nice to have a 'log'-transformation that also works for negative values to have points more evenly spread-out: ``` ihs

frederikziebell

Make sure `log10_trans` can calculate breaks for ranges outside of it's domain

1

This is a transfer of https://github.com/tidyverse/ggplot2/issues/2454

thomasp85

Add effects to gradient_n_pal()

1

Packages such as [prismatic](https://github.com/EmilHvitfeldt/prismatic) manipulate color properties such as lightness, saturation, and negation. Adding these effects to `gradient_n_pal()` would allow _convenient_ manipulation of color palettes in [ggplot2](https://github.com/tidyverse/ggplot2) (i.e. `scale_color_viridis_c()`) and...

seasmith

Square-root transforms happily inverse-transforms negative values

2

I'm not sure if this should be fixed, but it does lead to some confusing behaviour (tidyverse/ggplot2#980): ``` r library(scales) trans [1] 4 trans$transform(4) #> [1] 2 trans [1] 4...

paleolimbot