From 5493a83114e6dff41ce10c9d9503e530452619bc Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Wed, 18 Mar 2026 15:49:20 -0500
Subject: [PATCH] show decimal precision and units on graph y-axis (#76)

Chart.js was showing integer-rounded values like '2' instead of '2.1 ms'. Uses toFixed(1) in tick callbacks for proper decimal display with units.

Reviewed-on: https://git.mcintire.me/graham/towerops-web/pulls/76
---
 assets/js/app.ts                         | 4 ++--
 lib/towerops_web/live/graph_live/show.ex | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/assets/js/app.ts b/assets/js/app.ts
index 066bc644..3c4bc0f8 100644
--- a/assets/js/app.ts
+++ b/assets/js/app.ts
@@ -220,7 +220,7 @@ const SensorChart: SensorChartHook = {
               if (unit === '') {
                 return Math.round(value)
               }
-              return value + ' ' + unit
+              return value.toFixed(1) + ' ' + unit
             }
           },
           grid: {
@@ -253,7 +253,7 @@ const SensorChart: SensorChartHook = {
             if (unit === '') {
               return Math.round(value)
             }
-            return value + unit
+            return value.toFixed(1) + ' ' + unit
           }
         },
         grid: {
diff --git a/lib/towerops_web/live/graph_live/show.ex b/lib/towerops_web/live/graph_live/show.ex
index ca24d828..cf55bc81 100644
--- a/lib/towerops_web/live/graph_live/show.ex
+++ b/lib/towerops_web/live/graph_live/show.ex
@@ -766,7 +766,7 @@ defmodule ToweropsWeb.GraphLive.Show do
   end
 
   defp format_value(value, unit) when is_integer(value) do
-    "#{value} #{unit}"
+    "#{Float.round(value / 1, 1)} #{unit}"
   end
 
   # Live polling functions