def letrasGrafico(data):
"Make a slightly pathologic bar chart with only TWO data items."
drawing = Drawing(800, 300)
bc = VerticalBarChart()
bc.x = 50
bc.y = -10
bc.height = 300
bc.width = 300
bc.barWidth = 15
bc.Title = "Frencuencias en "
bc.data = data
#bc.strokeColor = colors.black
bc.valueAxis.valueMin = 0
bc.valueAxis.valueMax = 7000
bc.valueAxis.valueStep = 500
bc.categoryAxis.labels.boxAnchor = 'e'
bc.categoryAxis.labels.angle = 0
abc = "abcdefghijklmnopqrstuvwxyz"
bc.categoryAxis.categoryNames = list(abc)
drawing.add(bc)
return drawing
