16 polar directions and frequency set in rose plot in js

i want my rose plot to show 16 directions in grid(like:south west, southwest south etc).i am able to plot them but not able to show in grid.
and not able to change the frequency values in rose plotimage

Can you share a code snippet of what you’ve tried so far to help us help you?

go to this:

i want to show the NNE , NE , ENE, etc directions also in grid