Aaccept non-Float64 arrays in y-only lineplot! and scatterplot!

Author: kojix2

spec/unicode_plot_spec.cr

@@ -81,6 +81,13 @@ describe UnicodePlot do
       p.series.should eq(prev_series + 1)
     end
 
+    it "accepts y-only numeric overload in lineplot!" do
+      p = UnicodePlot.lineplot([1, 2, 3])
+      prev_series = p.series
+      UnicodePlot.lineplot!(p, [4, 5, 6])
+      p.series.should eq(prev_series + 1)
+    end
+
     it "ignores extreme finite values without overflowing during rasterization" do
       p = UnicodePlot.lineplot([Float64::MAX, 0.5], [0.5, 0.5])
       p.to_s.should be_a(String)
@@ -126,6 +133,13 @@ describe UnicodePlot do
       UnicodePlot.scatterplot!(p, [1_i64, 2_i64, 3_i64], [2_i64, 3_i64, 4_i64])
       p.series.should eq(prev_series + 1)
     end
+
+    it "accepts y-only numeric overload in scatterplot!" do
+      p = UnicodePlot.scatterplot([1, 2, 3])
+      prev_series = p.series
+      UnicodePlot.scatterplot!(p, [4, 5, 6])
+      p.series.should eq(prev_series + 1)
+    end
   end
 
   describe "barplot" do

src/unicode_plot/interface/lineplot.cr

@@ -137,9 +137,9 @@ module UnicodePlot
     lineplot!(plot, to_plot_f64(x), to_plot_f64(y), **kwargs)
   end
 
-  def lineplot!(plot : Plot, y : Array(Float64), **kwargs) : Plot
-    x = (1..y.size).map(&.to_f)
-    lineplot!(plot, x, y, **kwargs)
+  def lineplot!(plot : Plot, y : Array(T), **kwargs) : Plot forall T
+    x = (1..y.size).map(&.to_f64)
+    lineplot!(plot, x, to_plot_f64(y), **kwargs)
   end
 
   def lineplot!(plot : Plot, f : Float64 -> Float64, **kwargs) : Plot

src/unicode_plot/interface/scatterplot.cr

@@ -98,8 +98,8 @@ module UnicodePlot
     scatterplot!(plot, to_plot_f64(x), to_plot_f64(y), **kwargs)
   end
 
-  def scatterplot!(plot : Plot, y : Array(Float64), **kwargs) : Plot
-    x = (1..y.size).map(&.to_f)
-    scatterplot!(plot, x, y, **kwargs)
+  def scatterplot!(plot : Plot, y : Array(T), **kwargs) : Plot forall T
+    x = (1..y.size).map(&.to_f64)
+    scatterplot!(plot, x, to_plot_f64(y), **kwargs)
   end
 end