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Fix X-Axis MajorUnit and MinorUnit for category axes in line charts

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Co-authored-by: dfinke <67258+dfinke@users.noreply.github.com>
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copilot-swe-agent[bot]
2025-10-07 16:08:10 +00:00
parent 0c1829840d
commit debda51198
1 changed files with 51 additions and 0 deletions
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51
Public/Add-ExcelChart.ps1
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@@ -113,6 +113,57 @@ function Add-ExcelChart {
if ($null -ne $XMinValue) { $chart.XAxis.MinValue = $XMinValue } if ($null -ne $XMinValue) { $chart.XAxis.MinValue = $XMinValue }
if ($null -ne $XMaxValue) { $chart.XAxis.MaxValue = $XMaxValue } if ($null -ne $XMaxValue) { $chart.XAxis.MaxValue = $XMaxValue }
if ($XAxisNumberformat) { $chart.XAxis.Format = (Expand-NumberFormat $XAxisNumberformat) } if ($XAxisNumberformat) { $chart.XAxis.Format = (Expand-NumberFormat $XAxisNumberformat) }
# Fix for category axis (used in line charts, etc.): EPPlus doesn't serialize MajorUnit/MinorUnit to XML for category axes
# We need to manually add these elements to the XML if they were specified
if ($XMajorUnit -or $XMinorUnit) {
$chartXml = $chart.ChartXml
$nsManager = New-Object System.Xml.XmlNamespaceManager($chartXml.NameTable)
$null = $nsManager.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart")
$catAx = $chartXml.SelectSingleNode("//c:catAx", $nsManager)
if ($catAx) {
# Category axis exists - need to add majorUnit/minorUnit elements
if ($XMajorUnit) {
$existingMajorUnit = $catAx.SelectSingleNode("c:majorUnit", $nsManager)
if (-not $existingMajorUnit) {
$majorUnitElement = $chartXml.CreateElement("c", "majorUnit", "http://schemas.openxmlformats.org/drawingml/2006/chart")
$null = $majorUnitElement.SetAttribute("val", $XMajorUnit)
# Insert after scaling element or at the beginning
$scalingNode = $catAx.SelectSingleNode("c:scaling", $nsManager)
if ($scalingNode) {
$null = $catAx.InsertAfter($majorUnitElement, $scalingNode)
} else {
$null = $catAx.PrependChild($majorUnitElement)
}
} else {
$null = $existingMajorUnit.SetAttribute("val", $XMajorUnit)
}
}
if ($XMinorUnit) {
$existingMinorUnit = $catAx.SelectSingleNode("c:minorUnit", $nsManager)
if (-not $existingMinorUnit) {
$minorUnitElement = $chartXml.CreateElement("c", "minorUnit", "http://schemas.openxmlformats.org/drawingml/2006/chart")
$null = $minorUnitElement.SetAttribute("val", $XMinorUnit)
# Insert after majorUnit if it exists, otherwise after scaling
$majorUnitNode = $catAx.SelectSingleNode("c:majorUnit", $nsManager)
if ($majorUnitNode) {
$null = $catAx.InsertAfter($minorUnitElement, $majorUnitNode)
} else {
$scalingNode = $catAx.SelectSingleNode("c:scaling", $nsManager)
if ($scalingNode) {
$null = $catAx.InsertAfter($minorUnitElement, $scalingNode)
} else {
$null = $catAx.PrependChild($minorUnitElement)
}
}
} else {
$null = $existingMinorUnit.SetAttribute("val", $XMinorUnit)
}
}
}
}
if ($YAxisTitleText) { if ($YAxisTitleText) {
$chart.YAxis.Title.Text = $YAxisTitleText $chart.YAxis.Title.Text = $YAxisTitleText