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Add xoffsets kwarg #214

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@scottshambaugh scottshambaugh commented Mar 7, 2025

Closes #176 by adding xoffsets as a kwarg, similar to yoffsets. Properly handles both numeric and timedelta offsets.

@scottshambaugh scottshambaugh marked this pull request as ready for review March 7, 2025 16:49
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This lets me get a plot like I was wanting in the original issue!

import matplotlib.pyplot as plt
import numpy as np
from labellines import labelLines

pi_2 = np.pi/2
x = np.linspace(0, pi_2, 100)
fig, ax = plt.subplots()

for i in range(3):
    ax.plot(x, np.sin(x) + i, label=f'x{i}')
labelLines(ax.get_lines(), zorder=2.5, xvals=[pi_2 - 1e-9]*3, xoffsets=0.1)
ax.set_xlim(0, pi_2 + 0.2)

test

@@ -162,6 +179,13 @@ def _update_anchors(self):
x = self._line.convert_xunits(self._target_x)
xdata, ydata = normalize_xydata(self._line)

# Convert timedelta to float if needed
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Note to self, can update when matplotlib/matplotlib#8869 is resolved.

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Request: allow plotting a labelLine outside the data range
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