Should an empty vega() call produce a blank canvas?

[sa-lee]

i.e. if you do:

vega()
vega(melbweather)
vega(melbweather, enc(x = ambient_temperature)

Should this produce an equivalent to geom_blank()

[earowang]

Yea, what's the equivalent of geom_blank() in vega?

[sa-lee]

I don't think there is one as far as I can tell...

[sa-lee]

idea is to use color = "transparent" for a point mark