From d2310400ad2df8470d19131d24455c514c5cdaf5 Mon Sep 17 00:00:00 2001
From: Federico Lolli <federico.lolli@skywarder.eu>
Date: Sun, 13 Apr 2025 18:48:37 +0200
Subject: [PATCH] Plot2D: now the last value of a line is shown in the legend
---
src/ui/panes/plot.rs | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/src/ui/panes/plot.rs b/src/ui/panes/plot.rs
index e3fe6b7..beef90c 100644
--- a/src/ui/panes/plot.rs
+++ b/src/ui/panes/plot.rs
@@ -9,7 +9,7 @@ use crate::{
utils::units::UnitOfMeasure,
};
use egui::{Color32, Ui, Vec2, Vec2b};
-use egui_plot::{AxisHints, HPlacement, Legend, Line, PlotPoint, log_grid_spacer};
+use egui_plot::{AxisHints, Corner, HPlacement, Legend, Line, PlotPoint, log_grid_spacer};
use serde::{self, Deserialize, Serialize};
use std::{
hash::{DefaultHasher, Hash, Hasher},
@@ -124,7 +124,14 @@ impl PaneBehavior for Plot2DPane {
.x_grid_spacer(log_grid_spacer(4)) // 4 was an arbitrary choice
.auto_bounds(Vec2b::TRUE)
.set_margin_fraction(Vec2::splat(0.))
- .legend(Legend::default())
+ .legend(
+ Legend::default()
+ .position(Corner::LeftTop)
+ // force to disable the hiding of the lines due to labels
+ // changing and egui_plot thinking of them as different plot
+ // lines
+ .hidden_items(None),
+ )
.label_formatter(cursor_formatter);
if self.settings.axes_visible {
@@ -141,11 +148,16 @@ impl PaneBehavior for Plot2DPane {
for ((field, settings), TimeAwarePlotPoints { points, .. }) in
zip(&self.settings.y_fields, &self.line_data)
{
+ let legend_label = format!(
+ "{} - {:.5}",
+ field.name(),
+ points.last().map(|l| l.y).unwrap_or_default()
+ );
plot_ui.line(
Line::new(&points[..])
.color(settings.color)
.width(settings.width)
- .name(field.name()),
+ .name(legend_label),
);
}
plot_ui
--
GitLab