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[python] helpers: import matplotlib only in the plotting functions #193

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Merged
antonio-leblanc merged 1 commit into from
Oct 5, 2026
Merged

[python] helpers: import matplotlib only in the plotting functions #193

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5 changes: 5 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,10 @@ Merged since v2.5.0, not yet released.
the wheel. ([#154])
- Free-threaded (`cp314t`) wheels are no longer published, because the core is
not yet thread-safe; CPython 3.14 is declared supported. ([#155])
- `import pyforefire` no longer loads matplotlib; it is imported only when
`printToPathe` or `plot_simulation` is called. `plt`, `cm`, `mpath`,
`mpatches` and `ListedColormap` are no longer reachable as `pyforefire`
attributes. ([#193])

## [v2.5.0] — 2026-08-11

Expand Down Expand Up @@ -189,3 +193,4 @@ repository stays easy to return to.
[#178]: https://github.com/forefireAPI/forefire/pull/178
[#180]: https://github.com/forefireAPI/forefire/pull/180
[#183]: https://github.com/forefireAPI/forefire/pull/183
[#193]: https://github.com/forefireAPI/forefire/pull/193
10 changes: 5 additions & 5 deletions bindings/python/src/pyforefire/helpers.py
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@@ -1,15 +1,10 @@
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.path as mpath
import matplotlib.patches as mpatches
import matplotlib.cm as cm
import math

import struct
import zlib


from matplotlib.colors import ListedColormap

def get_fuels_table(propagation_model):
if propagation_model == 'RothermelAndrews2018':
Expand Down Expand Up @@ -367,6 +362,7 @@ def printToPathe(linePrinted):
"""
Compute the current results of simulation to pathes.
"""
import matplotlib.path as mpath
fronts = linePrinted.split("FireFront")
pathes = []
for front in fronts[1:]:
Expand Down Expand Up @@ -539,6 +535,10 @@ def plot_simulation(pathes, fuel_map, elevation_map, myExtents, scalMap = None):
Used for plot 4 axis graph, with Heatflux, Fuels, Altitude plotted under simulation,
and Statistics for the last axis.
"""
import matplotlib.pyplot as plt
import matplotlib.patches as mpatches
import matplotlib.cm as cm
from matplotlib.colors import ListedColormap
#import seaborn as sns
# Create a figure with 2 axis (2 subplots)
fig, ax = plt.subplots(figsize=(10,7), dpi=120)
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