Rubocop auto correct

lib/uplot/plot.rb

@@ -18,7 +18,7 @@ module Uplot
       if series.size == 1
         # If there is only one series, use the line number for label.
         params.title ||= headers[0] if headers
-        labels = Array.new(series[0].size){|i| (i+1).to_s}
+        labels = Array.new(series[0].size) { |i| (i + 1).to_s }
         values = series[0].map(&:to_f)
       else
         params.title ||= headers[1] if headers

lib/uplot/preprocessing.rb

@@ -62,14 +62,12 @@ module Uplot
         else
           arr
         end
-      else
-        if headers
+      elsif headers
         transpose2(arr[1..-1])
       else
         transpose2(arr)
       end
     end
-    end
 
     def count_values(arr)
       # tally was added in Ruby 2.7