[Rd] Could unit.list() from grid package be made an exported function?
Wilke, Claus O
wilke at austin.utexas.edu
Tue Mar 8 21:54:48 CET 2016
Subassignment for units has been committed to r-devel.
You should now be able to do things like ...
x <- unit(1:3, "mm")
x <- unit(.5, "npc")
(see grid/tests/units.R for more complex examples)
Yes, I just tried the latest R devel and it works for me. However:
This works for me for the three stackoverflow scenarios.
I ran into an additional problem when trying to replicate this example:
This line in the function set_panel_size() causes an error for me:
g$widths[panel_index_w] <- rep(list(width), nw)
Error in `[<-.unit`(`*tmp*`, panel_index_w, value = list(4, 4, 4)) :
Value being assigned must be a unit
I can avoid the error by changing the line into:
g$widths[panel_index_w] <- rep(grid:::unit.list(width), nw)
This, however, again uses grid:::unit.list(). Maybe there’s another way around this, but turning a single width value into a unit.list seems the obvious way to go in a case like this. So again, I’d like to request that grid:::unit.list() be made an exported function as well. It seems quite useful any time somebody wants to make a list of units.
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