relax Plot, lineplot, scatterplot ctors (#369)

Author: t-bltg

ext/TermExt.jl

@@ -14,4 +14,4 @@ UnicodePlots.gridplot(plots::Union{AbstractVector,Tuple}; kw...) =
 UnicodePlots.gridplot(plots::Plot...; kw...) =
     Term.grid(map(UnicodePlots.panel, plots); kw...)
 
-end
+end  # module

src/interface/lineplot.jl

@@ -1,4 +1,6 @@
 """
+    lineplot(; kw...)
+    lineplot(y; kw...)
     lineplot(x, y; kw...)
     lineplot!(p, args...; kw...)
 
@@ -75,6 +77,7 @@ function lineplot(
     lineplot!(Plot(x, y, z, canvas; pkw...), x, y, z; okw...)
 end
 
+lineplot(; kw...) = lineplot([]; kw...)
 lineplot(y::AbstractVector; kw...) = lineplot(axes(y, 1), y; kw...)
 
 @doc (@doc lineplot) function lineplot!(

src/interface/scatterplot.jl

@@ -1,4 +1,6 @@
 """
+    scatterplot(; kw...)
+    scatterplot(y; kw...)
     scatterplot(x, y; kw...)
     scatterplot!(p, args...; kw...)
 
@@ -69,6 +71,7 @@ function scatterplot(
     scatterplot!(Plot(x, y, z, canvas; pkw...), x, y, z; okw...)
 end
 
+scatterplot(; kw...) = lineplot([]; kw...)
 scatterplot(y::AbstractVector; kw...) = scatterplot(axes(y, 1), y; kw...)
 
 @doc (@doc scatterplot) function scatterplot!(

src/plot.jl

@@ -149,6 +149,8 @@ function validate_input(x::AbstractVector, y::AbstractVector, z::Nothing)
     end
 end
 
+Plot(; kw...) = Plot([], []; kw...)
+
 function Plot(
     x::AbstractVector,
     y::AbstractVector,

test/references_24/surfaceplot/sombrero_aspect.txt

@@ -11,7 +11,7 @@
     │⠀⠀⠀⠀⠀⣠⣾⡿⠿⣿⣿⣕⣒⣒⣊⣽⣯⡮⠵⠅⠮⠮⢵⣽⣯⣑⣒⣒⣪⣿⣿⠿⢿⣷⣄⠀⠀⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠐⠻⠿⠛⠛⠛⠛⠽⢿⣶⣶⡾⠓⠉⠢⠈⡀⢁⠁⠔⠉⠚⢷⣶⣶⡿⠯⠛⠛⠛⠛⠿⠟⠂⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠿⣯⣯⣓⢶⣷⡆⣶⣾⡶⣚⣽⣽⠿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠻⡳⡻⡃⢟⢟⢞⠟⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⢀⡠⠼⠤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠪⠆⡵⠕⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠊⠁⠀⠀⠀⠀⠉⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠻⡳⡻⡃⢟⢟⢞⠟⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠪⠆⡵⠕⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
     └────────────────────────────────────────┘ -10 

test/references_24/surfaceplot/sombrero_identity.txt

@@ -10,8 +10,8 @@
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣨⣅⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⡾⢟⣿⣿⣿⣿⡻⢷⣦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⡿⣿⣋⣿⣿⣿⣿⣙⣿⢿⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠟⠀⢿⣟⣿⣟⣿⣿⣻⡿⠀⠻⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠀⠀⢸⣿⣿⢿⡿⣿⣿⡇⠀⠀⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⢀⡠⠜⠤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠻⠮⣿⣿⠵⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠊⠁⠀⠀⠀⠀⠉⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠟⠀⢿⣟⣿⣟⣿⣿⣻⡿⠀⠻⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠀⠀⢸⣿⣿⢿⡿⣿⣿⡇⠀⠀⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠻⠮⣿⣿⠵⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
     └────────────────────────────────────────┘ -10 

test/references_24/surfaceplot/sombrero_zscale.txt

@@ -11,7 +11,7 @@
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣾⣿⢖⡒⢊⡠⣯⣳⠳⠟⣞⣽⢄⡑⢒⡲⣿⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⡿⡿⢿⣷⣏⣉⢤⣣⣺⡭⢯⣗⣜⡤⣉⣹⣾⡿⢿⢿⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠀⠀⠀⠀⠀⠺⠟⠉⠀⠀⠈⣿⣻⣿⡷⢿⡻⣟⡿⢾⣿⣟⣿⠁⠀⠀⠉⠻⠗⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢿⣯⣟⣻⢞⡷⣟⣻⣽⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⢀⡠⠼⠤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⠻⣺⣗⠟⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠊⠁⠀⠀⠀⠀⠉⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢿⣯⣟⣻⢞⡷⣟⣻⣽⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⠻⣺⣗⠟⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
     └────────────────────────────────────────┘ -10 

test/references_8/surfaceplot/sombrero_aspect.txt

@@ -11,7 +11,7 @@
     │⠀⠀⠀⠀⠀⣠⣾⡿⠿⣿⣿⣕⣒⣒⣊⣽⣯⡮⠵⠅⠮⠮⢵⣽⣯⣑⣒⣒⣪⣿⣿⠿⢿⣷⣄⠀⠀⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠐⠻⠿⠛⠛⠛⠛⠽⢿⣶⣶⡾⠓⠉⠢⠈⡀⢁⠁⠔⠉⠚⢷⣶⣶⡿⠯⠛⠛⠛⠛⠿⠟⠂⠀⠀⠀│ │▄▄│
     │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠿⣯⣯⣓⢶⣷⡆⣶⣾⡶⣚⣽⣽⠿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠻⡳⡻⡃⢟⢟⢞⠟⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠀⢀⡠⠼⠤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠪⠆⡵⠕⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
-    │⠊⠁⠀⠀⠀⠀⠉⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠻⡳⡻⡃⢟⢟⢞⠟⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠪⠆⡵⠕⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ │▄▄│
+    │⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ └──┘
     └────────────────────────────────────────┘ -10