问题
So I have been using JFreeChart to try and create spiderWebPlot and it's been working well so far:
I was wondering if it was possible to add circles for the possibles values, so it looks more like an actual spider web, something like:
回答1:
After adding above code patch you will get rings like below image.
回答2:
As suggested here, a background grid is not yet implemented. A patch is cited and discussed in this forum thread.
来源：https://stackoverflow.com/questions/35944311/jfreechart-spiderwebplot-inner-circles