How is the BarSpacing option really implemented in Mathematica?

Question

I\'m trying to implement a DateListBarChart function that takes dated data and outputs a bar chart with the same placements as DateListPlot. It\'s

Answer 1

You may relieve your complaint about FillingStyle by using CapForm["Butt"].

list = {0.01, -0.81, 0.12, 0.81, 1.79, 1.1, 0.41, 1., 1.33, 1.08, 
  2.16, 1.13, 1.92, 1.64, 1.31, 1.94, 1.71, 0.91, 2.32, 0.95, 1.29, 
  1.28, 2.97, 4.45, 5.11}

DateListPlot[list, {2000, 8}, 
 PlotStyle -> {AbsolutePointSize[6], Yellow}, Filling -> {1 -> 0}, 
 FillingStyle -> {1 -> {{CapForm["Butt"], AbsoluteThickness[14], 
      Darker[Red, 0.25]}}}, PlotRange -> {0, 6}, ImageSize -> 400]