Fix: avoid division by 0 when image is single valued
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@ -1079,7 +1079,9 @@ def makeARGB(data, lut=None, levels=None, scale=None, useRGBA=False):
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minVal, maxVal = levels[i]
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if minVal == maxVal:
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maxVal += 1e-16
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newData[...,i] = rescaleData(data[...,i], scale/(maxVal-minVal), minVal, dtype=dtype)
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rng = maxVal-minVal
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rng = 1 if rng == 0 else rng
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newData[...,i] = rescaleData(data[...,i], scale / rng, minVal, dtype=dtype)
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data = newData
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else:
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# Apply level scaling unless it would have no effect on the data
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