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Fix: Add assertion for n_ticks minimum when labels provided #677

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brenocq merged 1 commit into from
Mar 7, 2026
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Fix: Add assertion for n_ticks minimum when labels provided #677

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2 changes: 2 additions & 0 deletions implot.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2247,6 +2247,8 @@ void SetupAxisTicks(ImAxis idx, double v_min, double v_max, int n_ticks, const c
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != nullptr && !gp.CurrentPlot->SetupLocked,
"Setup needs to be called after BeginPlot and before any setup locking functions (e.g. PlotX)!");
IM_ASSERT_USER_ERROR(labels == nullptr || n_ticks >= 2,
"When providing custom labels, n_ticks must be at least 2!");
n_ticks = n_ticks < 2 ? 2 : n_ticks;
FillRange(gp.TempDouble1, n_ticks, v_min, v_max);
SetupAxisTicks(idx, gp.TempDouble1.Data, n_ticks, labels, show_default);
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