Creating new stats and geoms

[Simon Byrne]

I have defined a new stat and geom, which I'm trying to wrap in a package. I want to export only the accessing functions stat_foo and geom_foo, and not the underlying proto object StatFoo and GeomFoo (i.e. the same behaviour as ggplot2 itself), however when I try to use the stat, I get the error: "Error: No geom called foo" (and vice-versa if I call the geom). The error seems to be cause by the "find" method in the TopLevel proto, as it only searches it's accessible functions. I've tried adding a "find" method to my protos, hoping this would overwrite the default one, but this didn't seem to help. Any ideas?

-Simon

[Hadley Wickham]

Hi Simon,

Do you have any reproducible code available? (pointer to github repo?)

Hadley

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[Simon Byrne]

Hi Hadley,

I've put what I have here:

https://github.com/simonbyrne/ggfunnel

(sorry, for some reason "install_github" won't work for me, but if you clone it, the usual "install" seems to work fine).

I've explicitly exported GeomFunnel and StatFunnel, but if I don't and attempt an install, I get the "No stat/geom called funnel" error.

Many thanks,

-Simon

[Hadley Wickham]

It's not ideal, but you can explicit refer to the geom/stat objects:

stat = StatFunnel

unfortunately I didn't fully appreciate how people might want to add
new geoms and stats when I initially wrote the geom/stat finding code.

Hadley

[Simon Byrne]

Fantastic, thanks. It should be okay in this case, as the geom and stat are pretty much tied together.

-simon