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Polar limits enhancements #4699

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Merged
merged 14 commits into from
Aug 21, 2017
Merged

Polar limits enhancements #4699

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24cd817
ENH: Add an "arc" spine type.
QuLogic Jul 17, 2015
52ab847
FIX: Allow negative radii in RadialLocator and polar grids.
QuLogic Jul 14, 2015
3809803
BUG: Ensure polar radial limits are nonsingular.
QuLogic Jul 17, 2015
0b6cc58
ENH: Don't round degree digits when zoomed on PolarAxes.
QuLogic Jul 17, 2015
2b77dbc
MNT: Standardize import in polar projection.
QuLogic Jul 19, 2015
2b33d7f
MNT: Use transforms for polar direction&offset.
QuLogic Jul 19, 2015
cbaee4a
ENH: Allow setting an "origin" radius for PolarAxes.
QuLogic Jul 20, 2015
202f40f
ENH: Allow setting angle limits on PolarAxes.
QuLogic Jul 31, 2015
b47ccba
ENH: Allow offsetting PolarAxes' zero location.
QuLogic Jul 21, 2015
d549014
STY: PEP8 the rest of PolarAxes code.
QuLogic Jul 21, 2015
b85c48c
DOC: Add what's new for polar axes.
QuLogic Jul 22, 2015
d67a7be
Use text transform for polar ticks also.
QuLogic Aug 5, 2017
734da0f
Use ordered dict for polar spines.
QuLogic Aug 16, 2017
7b998e1
Update polar test images.
QuLogic Aug 16, 2017
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ENH: Allow setting angle limits on PolarAxes. 
Setting angular limits allows one to create "wedges" instead of a full
circle or annulus.
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@QuLogic
QuLogic committed Aug 16, 2017
commit 202f40f5025b9185f93c342add8522c346bb3697
12 changes: 8 additions & 4 deletions examples/api/radar_chart.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,10 @@ def radar_factory(num_vars, frame='circle'):
"""
# calculate evenly-spaced axis angles
theta = np.linspace(0, 2*np.pi, num_vars, endpoint=False)
# rotate theta such that the first axis is at the top
theta += np.pi/2

def draw_poly_patch(self):
verts = unit_poly_verts(theta)
# rotate theta such that the first axis is at the top
verts = unit_poly_verts(theta + np.pi / 2)
return plt.Polygon(verts, closed=True, edgecolor='k')

def draw_circle_patch(self):
Expand All @@ -60,6 +59,11 @@ class RadarAxes(PolarAxes):
# define draw_frame method
draw_patch = patch_dict[frame]

def __init__(self, *args, **kwargs):
super(RadarAxes, self).__init__(*args, **kwargs)
# rotate plot such that the first axis is at the top
self.set_theta_zero_location('N')

def fill(self, *args, **kwargs):
"""Override fill so that line is closed by default"""
closed = kwargs.pop('closed', True)
Expand Down Expand Up @@ -93,7 +97,7 @@ def _gen_axes_spines(self):

# spine_type must be 'left', 'right', 'top', 'bottom', or `circle`.
spine_type = 'circle'
verts = unit_poly_verts(theta)
verts = unit_poly_verts(theta + np.pi / 2)
# close off polygon by repeating first vertex
verts.append(verts[0])
path = Path(verts)
Expand Down
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