From: gregor herrmann <gregor@toastfreeware.priv.at>
Date: Thu, 14 Jun 2018 22:12:41 +0000 (+0200)
Subject: format x tick values (datetime) differently according to interval
X-Git-Url: https://git.toastfreeware.priv.at/chrisu/seepark.git/commitdiff_plain/8e2b15c9ed5f03146cd999593b4d8515fde79858

format x tick values (datetime) differently according to interval

format strings picked a bit randomly for now, following the temperature
charts at https://info.comodo.priv.at/webcam/

might make more sense and fun with real values …
---

diff --git a/web/static/seepark_web.js b/web/static/seepark_web.js
index 399fd86..63bca13 100644
--- a/web/static/seepark_web.js
+++ b/web/static/seepark_web.js
@@ -1,6 +1,6 @@
 var api_base_url = '/api/1/sensor/type/Wassertemperatur?mode=consolidated&format=c3';
 
-function dayschart(element, interval, days) {
+function dayschart(element, interval, days, xtickformat) {
 	var chart = c3.generate({
 		bindto: '#' + element,
 		size: {
@@ -33,7 +33,7 @@ function dayschart(element, interval, days) {
 			x: {
 				type: 'timeseries',
 				tick: {
-					format: '%Y-%m-%d %H:%M',
+					format: xtickformat,
 					fit: false,
 					multiline: true, // broken? so →
 					rotate: -90
@@ -75,6 +75,10 @@ function dayschart(element, interval, days) {
 				},
 				value: function (value, ratio, id, index) {
 					return value.toFixed(2) + '°';
+				},
+				title: function (x) {
+					// TODO: format datetime into something readable
+					return x;
 				}
 			}
 		},
@@ -106,7 +110,7 @@ function beginend(days) {
 	return '&begin=' + begin + '&end=' + end;
 }
 
-dayschart('chart1',   'Tag',     1);
-dayschart('chart7',   'Woche',   7);
-dayschart('chart31',  'Monat',  31);
-dayschart('chart365', 'Jahr',  365);
+dayschart('chart1',   'Tag',     1, '%H:%M');
+dayschart('chart7',   'Woche',   7, '%a %d');
+dayschart('chart31',  'Monat',  31, 'Woche %V');
+dayschart('chart365', 'Jahr',  365, '%b %d');