barChartPrecip.js

"function barChartPrecip(e) {
      var ctx = e.drawingContext;
      var points = e.points;
      var y_bottom = - e.dygraph.toDomYCoord(0);
      
      // This should really be based on the minimum gap
      var bar_width = 3.0/3 * (points[1].canvasx - points[0].canvasx);
      ctx.fillStyle = e.color;
      
      // Do the actual plotting.
      for (var i = 0; i < points.length; i++) {
      var p = points[i];
      var center_x = p.canvasx;  // center of the bar
      
      ctx.fillRect(center_x - bar_width / 2, p.canvasy,
      bar_width, y_bottom - p.canvasy);
      ctx.strokeRect(center_x - bar_width / 2, p.canvasy,
      bar_width, y_bottom - p.canvasy);
      }
    }"