|
4 | 4 | ========== |
5 | 5 |
|
6 | 6 | Demo of a line plot on a polar axis. |
| 7 | +
|
| 8 | +The second plot shows the same data, but with the radial axis starting at r=1 |
| 9 | +and the angular axis starting at 0 degrees and ending at 225 degrees. Setting |
| 10 | +the origin of the radial axis to 0 allows the radial ticks to be placed at the |
| 11 | +same location as the first plot. |
7 | 12 | """ |
8 | 13 | importmatplotlib.pyplotasplt |
9 | 14 | importnumpyasnp |
10 | 15 |
|
11 | 16 | r=np.arange(0,2,0.01) |
12 | 17 | theta=2*np.pi*r |
13 | 18 |
|
14 | | -fig,ax=plt.subplots(subplot_kw={'projection':'polar'}) |
| 19 | +fig,axs=plt.subplots(2,1,figsize=(5,8),subplot_kw={'projection':'polar'}, |
| 20 | +layout='constrained') |
| 21 | +ax=axs[0] |
15 | 22 | ax.plot(theta,r) |
16 | 23 | ax.set_rmax(2) |
17 | | -ax.set_rticks([0.5,1,1.5,2])#Less radial ticks |
| 24 | +ax.set_rticks([0.5,1,1.5,2])#Fewer radial ticks |
18 | 25 | ax.set_rlabel_position(-22.5)# Move radial labels away from plotted line |
19 | 26 | ax.grid(True) |
20 | 27 |
|
21 | 28 | ax.set_title("A line plot on a polar axis",va='bottom') |
| 29 | + |
| 30 | +ax=axs[1] |
| 31 | +ax.plot(theta,r) |
| 32 | +ax.set_rmax(2) |
| 33 | +ax.set_rmin(1)# Change the radial axis to only go from 1 to 2 |
| 34 | +ax.set_rorigin(0)# Set the origin of the radial axis to 0 |
| 35 | +ax.set_thetamin(0) |
| 36 | +ax.set_thetamax(225) |
| 37 | +ax.set_rticks([1,1.5,2])# Fewer radial ticks |
| 38 | +ax.set_rlabel_position(-22.5)# Move radial labels away from plotted line |
| 39 | + |
| 40 | +ax.grid(True) |
| 41 | +ax.set_title("Same plot, but with reduced axis limits",va='bottom') |
22 | 42 | plt.show() |
23 | 43 |
|
24 | 44 | # %% |
|
32 | 52 | # - `matplotlib.projections.polar` |
33 | 53 | # - `matplotlib.projections.polar.PolarAxes` |
34 | 54 | # - `matplotlib.projections.polar.PolarAxes.set_rticks` |
| 55 | +# - `matplotlib.projections.polar.PolarAxes.set_rmin` |
| 56 | +# - `matplotlib.projections.polar.PolarAxes.set_rorigin` |
35 | 57 | # - `matplotlib.projections.polar.PolarAxes.set_rmax` |
36 | 58 | # - `matplotlib.projections.polar.PolarAxes.set_rlabel_position` |
37 | 59 | # |
|