I have a function $Q(y)$, which I would like to plot this radially using varying color shades to show the variation in the function. I'm looking for a 2D surface plot, maybe like
DensityPlot, but circular and versus one parameter ($y$). An example use case would be plotting the angular velocity of a galaxy with color, assuming that it is radially symmetric.
You can assume an arbitrary $Q(y)$, e.g. $1/y^2$. Now for each $y$, we have a value for $Q(y)$. One way to show the results is to plot $Q(y)$ vs. $y$. But I would prefer if I can have a circular plot where for each $y$ there is a ring where $y$ is constant. I would like the color of this ring to be determined by the value of $Q(y)$.