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Fix autoScale in scale_engine.py #90

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Merged
merged 2 commits into from
Dec 10, 2024
Merged

Fix autoScale in scale_engine.py #90

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98e719b
Fix autoScale in scale_engine.py
nicoddemus Dec 9, 2024
f55e171
Update scale_engine.py
nicoddemus Dec 10, 2024
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7 changes: 3 additions & 4 deletions qwt/scale_engine.py
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Original file line number Diff line number Diff line change
Expand Up @@ -674,10 +674,9 @@ def autoScale(self, maxNumSteps, x1, x2, stepSize):
linearInterval = linearInterval.limited(LOG_MIN, LOG_MAX)

if linearInterval.maxValue() / linearInterval.minValue() < logBase:
if stepSize < 0.0:
stepSize = -math.log(abs(stepSize), logBase)
else:
stepSize = math.log(stepSize, logBase)
# The min / max interval is too short to be represented as a log scale.
# Set the step to 0, so that a new step is calculated and a linear scale is used.
stepSize = 0.0
return x1, x2, stepSize

logRef = 1.0
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