Convert infinite values to NaN

src/examples.jl

@@ -480,6 +480,23 @@ PlotExample("Histogram2D (complex values)",
     end)]
 ),
 
+PlotExample("Unconnected lines using NaN values",
+"""
+Non-finite values, including `NaN`, are not plotted.
+Instead, lines are separated into segments at these values.
+""",
+    [:(begin
+        x,y = [1,2,2,1,1], [1,2,1,2,1]
+        plot(
+              plot([rand(5); NaN; rand(5); NaN; rand(5)]),
+              plot([1,Inf,2,3], marker=true),
+              plot([x; NaN; x.+2], [y; NaN; y.+1], arrow=2),
+              plot([1, 2+3im, Inf, 4im, 3, -Inf*im, 0, 3+3im], marker=true),
+              legend=false
+        )
+    end)]
+),
+
 ]
 
 # Some constants for PlotDocs and PlotReferenceImages

src/series.jl

@@ -14,7 +14,10 @@ const SeriesData = Union{AVec{<:DataPoint}, Function, Surface, Volume}
 
 prepareSeriesData(x) = error("Cannot convert $(typeof(x)) to series data for plotting")
 prepareSeriesData(::Nothing) = nothing
-prepareSeriesData(s::SeriesData) = handlemissings(s)
+prepareSeriesData(s::SeriesData) = handleinfinites(handlemissings(s))
+
+handleinfinites(s) = s
+handleinfinites(s::AbstractArray{<:MaybeNumber}) = [isinf(x) ? NaN : x for x in s]
 
 handlemissings(v) = v
 handlemissings(v::AbstractArray{<:MaybeNumber}) = replace(v, missing => NaN)