[statistics] Add hint regarding blue tint of usage graph

1 files changed, 7 insertions, 7 deletions

diff --git a/modules-available/statistics/templates/summary.html b/modules-available/statistics/templates/summary.html
index a0efd531..751a9bed 100644
--- a/modules-available/statistics/templates/summary.html
+++ b/modules-available/statistics/templates/summary.html
@@ -30,7 +30,8 @@
 
 				var markings = {{{markings}}};
 				var markMax = Math.max(...markings) * 3;
-				if (markMax <= 0) markMax = 1;
+				var showLegend = markMax > 0;
+				if (markMax < 8) markMax = 8;
 
 				var oldDraw = Chart.prototype._drawDatasets;
 
@@ -65,12 +66,11 @@
 					pointHitRadius: 6,
 					interaction: { mode: 'index' },
 					plugins: {
-						tooltip: { callbacks: { label: function(context) {
-									if (context.dataset.label === 'Courses')
-										return null;
-									return context.dataset.label + ': ' + context.parsed.y;
-								}
-							}},
+						subtitle: {
+							display: showLegend,
+							text: '{{lang_graphLectureTitle}}',
+							position: 'bottom',
+						},
 						legend: {position: 'left' },
 					}
 				}});