[BUG] Ribbons with NaN broken

[yha]

Details

plot(10rand(30), ribbon=[1:10;fill(NaN,10);1:10])

with GR:

(maybe related to #1920?)

with Plotly:

In pyplot, this works fine

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)	x
pyplot		x
plotly	x
plotlyjs	x
pgfplotsx			x
inspectdr			x

(tested with Plots master)

[BeastyBlacksmith]

I can't reproduce the figrure for GR on 1.6.4 ( I get a line without ribbon instead).
However, probably you want something like

plot(10rand(30), ribbon=[1:10;fill(0,10);1:10])

?

[yha]

On Plots 1.6.4 (julia 1.4.2), I still see original behavior I reported on both GR (0.52.0) and PlotlyJS (0.14.0).

However, probably you want something like

plot(10rand(30), ribbon=[1:10;fill(0,10);1:10])

That's almost, but not quite, the behavior I would expect when the ribbon data has NaNs or missings. The pyplot backend gets it right:

plot(10rand(30), ribbon=[1:10;fill(NaN,10);1:10])

Compare with plot(10rand(30), ribbon=[1:10;fill(0,10);1:10]):