I am trying to get the radial (or y-axis) labels on a polar plot to go on top of the lines that are plotted on the graph. Right now they are underneath the lines and are covered up.
Here is a simplified version of the code for just one city and one line:
fig, ax = plt.subplots(figsize=(10,6) , nrows=1, ncols=1,subplot_kw=dict(projection='polar'))
rmax = 15
rticks = np.arange(9,rmax,1.5)
rticklabel = np.arange(18,rmax*2,3).astype(int)
theta = np.arange(0,6.3, 0.17) #plots a circle
r = np.ones(len(theta))*(21/2)
ax.plot(theta, r,c='r', linestyle='-',linewidth = 4,zorder=1)
ax.set_rmax(rmax)
ax.set_rticks(rticks) # less radial ticks
ax.set_xticklabels([])
ax.set_rlabel_position(285) # get radial labels away from plotted line
ax.grid(True)
ax.set_facecolor('white')
ax.yaxis.grid(color='silver', linestyle=':',linewidth = 1.5,zorder=10)
ax.set_yticklabels(rticklabel,fontsize=12,zorder=10) #this zorder does nothing
I have already tried this:
plt.rcParams["axes.axisbelow"] = False
This brings the text to the front as I wish, however, it also brings the grid lines. I would like those to stay behind the colored lines.
I have also tried changing the zorder of the yaxis grid, but that does not work.
Most solutions for this are not for the polar axis. Any suggestions?
Unfortunately it seems that the zorder of the grid and labes is tied to that of the axes: https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.grid.html
One possible solution even if not elegant is to draw the gridlines yourself
fig, ax = plt.subplots(figsize=(10,6) , nrows=1, ncols=1,subplot_kw=dict(projection='polar'))
rmax = 15
rticks = np.arange(9,rmax,1.5)
rticklabel = np.arange(18,rmax*2,3).astype(int)
theta = np.arange(0,6.3, 0.17) #plots a circle
r = np.ones(len(theta))*(21/2)
ax.plot(theta, r,c='r', linestyle='-',linewidth = 4,zorder=2)
ax.set_rticks(rticks) # less radial ticks
ax.set_xticklabels([])
ax.set_rlabel_position(285) # get radial labels away from plotted line
ax.xaxis.grid(True)
ax.yaxis.grid(False)
ax.set_facecolor('white')
ax.set_yticklabels(rticklabel,fontsize=12,zorder=10) #this zorder does nothing
ax.yaxis.set_zorder(10)
#ax.yaxis.grid(color='silver', linestyle=':',linewidth = 1.5,zorder=10)
x = np.arange(0,2*np.pi,0.05)
y = np.outer( np.ones(x.shape), rticks)
ax.plot( x,y, zorder=1, color='silver', linestyle=':')
ax.set_ylim(0,rmax)