[reportlab-users] How can I stripe the grid

[Ulf Renman]

I solved this myself with the code below. Any comments on that?

weekColors = [
    colors.white,
    colors.white,
    colors.white,
    colors.white,
    colors.white,
    colors.Color(0.7,0.7,0.7),
    colors.Color(0.9,0.7,0.7),
    ]
def fun(data):
    drawing = Drawing(w,h)
    lp = LinePlot()

    <snip>

    # Create the grid.
    #   Use the same size and position as the LinePlot
    #   Calculate the gridstep by checking the actual data
    #   Offset it by half a step to make the grid better aligned with 
the data
    #   Calculate the order of the striping by getting the weekday of 
the first
    #     data point.
    grid = Grid()
    grid.x = lp.x
    grid.y = lp.y
    grid.width = lp.width
    grid.height = lp.height
    grid.delta = 20
    mi = data[0]['date'].toordinal()
    ma = data[-1]['date'].toordinal()
    grid.delta = float(grid.width)/(ma-mi)
    grid.delta0 = grid.delta/2
    wd = int(date.fromordinal(mi).strftime('%u'))-1
    grid.stripeColors = (weekColors+weekColors)[wd:wd+len(weekColors)]
    grid.useLines = 1
    grid.useRects = 1
    grid.strokeWidth = 0.3
    drawing.add(grid)

    # Add the LinePlot after the grid since we want it to be painted on top
    # of the grid.
    drawing.add(lp)


Ulf Renman wrote:

> Hi

>

> I use a LinePlot with dates on the x-axis. How can I make the grid so 

> that the columns for Saturday and Sunday be highligted?

>

> /Ulf

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