问题
I wish to create a graph whose y-axis starts at 0. None of my values are 0 though. How do i go about doing that in graphael ?
As an extension, how can I create a graph with a y-axis whose maximum value is, lets say, twice the maximum value in the provided data ?
回答1:
I don't know if this is too late but I've been struggling with gRaphael myself and came across a solution that might work for you. There's no obvious or clean way to do this but I've found a decent hack for it.
You can add in another array of y values (the first being 0 and last being 2x your max value) and specify the color for this line to be transparent using the colors option.
I've created a fiddle so you can see what I mean: jsFiddle example
The first chart is what you currently have and the second shows the addition of the second set of y values.
来源：https://stackoverflow.com/questions/7075013/how-do-you-get-a-y-axis-that-starts-at-zero-in-graphael-if-none-of-your-values