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Fix Solara render crash for CellAgent visualization #287

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Fix Solara render crash for CellAgent visualization #287

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7927fcd
Fix Solara render crash for CellAgent visualization
Dec 18, 2025
893f437
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Dec 18, 2025
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29 changes: 23 additions & 6 deletions examples/hotelling_law/app.py
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Original file line number Diff line number Diff line change
Expand Up @@ -123,13 +123,20 @@ def SpaceDrawer(model):
jitter_amount = 0.3 # Jitter for visual separation

for agent in model.agents:
if (
not hasattr(agent, "cell")
or agent.cell is None
or agent.cell.coordinate is None
):
continue

pos = agent.cell.coordinate
portrayal = agent_portrayal(agent)

# Track store agents for cell coloring
if isinstance(agent, StoreAgent):
if agent.pos not in cell_store_contents:
cell_store_contents[agent.pos] = []
cell_store_contents[agent.pos].append(portrayal)
if pos not in cell_store_contents:
cell_store_contents[pos] = []
cell_store_contents[pos].append(portrayal)

# Color cells based on store occupancy
for pos, stores in cell_store_contents.items():
Expand All @@ -150,11 +157,21 @@ def SpaceDrawer(model):
)
ax.add_patch(rect)

# Jittered scatter plot for all agents
# Jittered scatter plot for all agents
for agent in model.agents:
if (
not hasattr(agent, "cell")
or agent.cell is None
or agent.cell.coordinate is None
):
continue

portrayal = agent_portrayal(agent)
jitter_x = np.random.uniform(-jitter_amount, jitter_amount) + agent.pos[0] + 0.5
jitter_y = np.random.uniform(-jitter_amount, jitter_amount) + agent.pos[1] + 0.5
pos = agent.cell.coordinate

jitter_x = np.random.uniform(-jitter_amount, jitter_amount) + pos[0] + 0.5
jitter_y = np.random.uniform(-jitter_amount, jitter_amount) + pos[1] + 0.5

ax.scatter(
jitter_x,
Expand Down