1 files changed, 7 insertions, 0 deletions
diff --git a/drawing.go b/drawing.go
index ea75e82..3ce1282 100644
--- a/drawing.go
+++ b/drawing.go
@@ -1000,10 +1000,17 @@ func (f *File) drawPlotAreaValAx(formatSet *formatChart) []*cAxs {
 	if formatSet.YAxis.Maximum == 0 {
 		max = nil
 	}
+	var logBase *attrValFloat
+	// Follow OOXML requirements on
+	// [https://github.com/sc34wg4/OOXMLSchemas/blob/2b074ca2c5df38b18ac118646b329b508b5bdecc/Part1/OfficeOpenXML-XMLSchema-Strict/dml-chart.xsd#L1142-L1147]
+	if formatSet.YAxis.LogBase >= 2 && formatSet.YAxis.LogBase <= 1000 {
+		logBase = &attrValFloat{Val: float64Ptr(formatSet.YAxis.LogBase)}
+	}
 	axs := []*cAxs{
 		{
 			AxID: &attrValInt{Val: intPtr(753999904)},
 			Scaling: &cScaling{
+				LogBase:     logBase,
 				Orientation: &attrValString{Val: stringPtr(orientation[formatSet.YAxis.ReverseOrder])},
 				Max:         max,
 				Min:         min,