Review dependencies

[hadley]

What is the full set of recursive dependencies? Is there any obvious way to reduce?

[hadley]

@dpseidel can you please take a stab at this one? Start by using some existing tool (ask @gaborcsardi) to enumerate all the recursive deps, and list in this issue

[dpseidel]

Depends/Imports/LinkingTo (nested):

• R >=2.13
• RColorBrewer-1.1-2
• dichromat-2.0-0
  • stats
• plyr-1.8.4
  • R >= 3.1.0
  • Rcpp-0.12.17 >= 0.11.0
• munsell-0.5.0
  • methods
  • colorspace-1.3-2
    - graphics
    - grDevices
• labeling-0.3
• Rcpp-0.12.17
• R6-2.2.2
  • R >= 3.0.0
• viridisLite-0.3.0

So in total, scales is dependent on 9 packages beyond those shipped with baseR.
Parsed from http://crandeps.r-pkg.org/deps/scales

[hadley]

And we eliminated plyr already.

I wonder if we should move dichromat and labeling to suggested? They seem less frequently used.

[dpseidel]

sure, do you want me to just make the change? is there a tool to test how frequently a dependency is used?

[hadley]

I think the main thing is to check that ggplot2's use of scales doesn't end up using the functions that require these packages (I don't think it does, but you should check).

You could try a GitHub code search for the functions involved (dichromat_pal() and extended_breaks()). That would give a rough idea of popularity.

[dpseidel]

Moving dichromat to suggests seems fine, but ggplot2 relies on extended_breaks() by default since 2012 (ggplot2 issue 580) so labeling is required for basically every plot.

[hadley]

Ah, ok, lets just suggest dichromat 😄