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fix: invert y-axis label row index to match plot orientation #112

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Merged
meszmate merged 1 commit into from
May 28, 2026
Merged

fix: invert y-axis label row index to match plot orientation #112

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4 changes: 2 additions & 2 deletions src/components/chart.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -392,12 +392,12 @@ pub const Chart = struct {
}

fn renderPlotRow(self: *const Chart, allocator: std.mem.Allocator, row_index: usize, plot_line: []const u8, plot_height: usize, y_label_width: usize, y_ticks: *const TickSet) ![]const u8 {
_ = plot_height;
var result: Writer.Allocating = .init(allocator);
const writer = &result.writer;

if (self.y_axis.show_labels) {
const label = y_ticks.labelForRow(row_index) orelse "";
const tick_row = if (plot_height > 0) plot_height - 1 - row_index else row_index;
const label = y_ticks.labelForRow(tick_row) orelse "";
const padded = try renderPaddedLabel(allocator, label, y_label_width, self.y_axis.label_style);
defer allocator.free(padded);
try writer.writeAll(padded);
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