Add Scatter and Line functions as dots-only and lines-only Data shorthands

Author: Omnikar

lib.ua

@@ -70,6 +70,10 @@ PC ↚ PlotConfig
     LineWidth: °[]△⟜Num ← ∞
   }
 └─╴
+# Create a `Data` instance that draws only dots
+Scatter ← Data!(°⊸DrawDots 1 °⊸DrawLines 0 New)
+# Create a `Data` instance that draws only lines
+Line ← Data!(°⊸DrawLines 1 °⊸DrawDots 0 New)
 
 # Stack one RGBA image atop another
 Stack ← ⍜°⍉⊂ ↧⊸↥0÷⊃(+׬𝄐’|+⊃×(×𝄐׬)|𝄐⍜∩¬×) ∩⍜°⍉°𝄈⊂