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Fix stacked bar column filling entire chart area when single element is present #10

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Merged
rebelinux merged 2 commits into from
Feb 25, 2026
Merged

Fix stacked bar column filling entire chart area when single element is present #10

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68b2a4a
Initial plan
Copilot Feb 25, 2026
eaaf21b
Fix: Set moderate bar width for single-element stacked bar charts
Copilot Feb 25, 2026
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3 changes: 3 additions & 0 deletions Sources/StackedBarChart.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,8 @@ public object Chart(List<double[]> values, string[] labels, string[] categoryNam

// create bars
var bars = new List<ScottPlot.Bar>();
// Set a moderate bar width when there is only one element to prevent it from filling the entire chart area
double barSize = values.Count == 1 ? 0.5 : 0.8;
// assign values and colors to each bar
for (int x = 0; x < values.Count; x++)
{
Expand All @@ -101,6 +103,7 @@ public object Chart(List<double[]> values, string[] labels, string[] categoryNam
FillColor = colorPalette.GetColor(i),
Label = $"{values[x][i]}",
CenterLabel = true,
Size = barSize,
});
nextBarBase += values[x][i];
}
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8 changes: 8 additions & 0 deletions Tests/AsBuiltReport.Chart.Functions.Tests.ps1
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Expand Up @@ -70,5 +70,13 @@ Describe 'AsBuiltReport.Chart Exported Functions' {
It 'Should throw error for mismatched Values and LegendCategories' {
{ New-StackedBarChart -Title 'Test' -Values @(@(1, 2), @(3, 4)) -Labels @('A', 'B') -LegendCategories @('X') -Format 'png' -OutputFolderPath $TestDrive } | Should -Throw -ExpectedMessage "Error: Values and category names must be equal."
}
It 'Should run without error with a single element (single-bar chart)' {
{ New-StackedBarChart -Title 'Test' -Values @(,[double[]]@(1, 2)) -Labels @('A') -LegendCategories @('X', 'Y') -Format 'png' -OutputFolderPath $TestDrive } | Should -Not -Throw
}
It 'Should return a file path as output for a single element' {
$result = New-StackedBarChart -Title 'Test' -Values @(,[double[]]@(1, 2)) -Labels @('A') -LegendCategories @('X', 'Y') -Format 'png' -OutputFolderPath $TestDrive
$result | Should -BeOfType 'System.IO.FileSystemInfo'
Test-Path $result | Should -BeTrue
}
}
}