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fix FutureWarning pd.concat with empty entries #40

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Merged
Peiderk merged 1 commit into from
Oct 9, 2025
Merged

fix FutureWarning pd.concat with empty entries #40

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12 changes: 6 additions & 6 deletions src/pytrajplot/generate_pdf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -525,8 +525,8 @@ def generate_pdf(
# initialise two empty panda series, which ultimately contain the longitude/latitude values of all trajectories
# departing from current origin. --> to compute dynamic domain and check dateline crossing
trajectory_longitude_expansion, trajectory_latitude_expansion = (
pd.Series(),
pd.Series(),
pd.Series(dtype=float),
pd.Series(dtype=float),
)

row_index = 0 # index of the current trajectory; helper variable to compute the rows, that make up individual trajectories
Expand Down Expand Up @@ -675,8 +675,8 @@ def generate_pdf(

# reset the traj_expansion pandas series before next iteration
trajectory_longitude_expansion, trajectory_latitude_expansion = (
pd.Series(),
pd.Series(),
pd.Series(dtype=float),
pd.Series(dtype=float),
)

# analogous to case w/ side trajectories. compare there for reference.
Expand Down Expand Up @@ -799,7 +799,7 @@ def generate_pdf(
)
# reset the traj_expansion pandas series before next iteration
trajectory_longitude_expansion, trajectory_latitude_expansion = (
pd.Series(),
pd.Series(),
pd.Series(dtype=float),
pd.Series(dtype=float),
)
return
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