+ },
+ zoom: {
+ enabled: true,
+ onzoomend: function (domain) {
+ // UNIX epoch
+ var start = domain[0].getTime()/1000;
+ var end = domain[1].getTime()/1000;
+ var duration = end - start;
+ // duration is now the diff of the "viewport in seconds"
+ // FIXME
+ var days = Math.round(duration / 86400 / 2);
+ if (days > 0) {
+ loaddays(days);
+ }
+ }
+ },
+ tooltip: {
+ format: {
+ name: function (name, ratio, id, index) {
+ var re = /\d m/;
+ var res = re.exec(name);
+ return res;
+ },
+ value: function (value, ratio, id, index) {
+ return value.toFixed(2) + '°';
+ }
+ }
+ },
+ grid: {
+ y: {
+ show: true
+ }
+ },
+ regions: [
+ {axis: 'y', start: -999, end: 0, class: 'region-frozen'},
+ {axis: 'y', start: 0, end: 25, class: 'region-ok'},
+ {axis: 'y', start: 25, end: 100, class: 'region-warm'},
+ {axis: 'y', start: 100, end: 999, class: 'region-boiling'}
+ ]
+ });
+ };
+
+function loaddays(days) {
+ chart.load({
+ url: api_base_url + beginend(days),
+ mimeType: 'json'
+ });
+}
+
+function beginend(days) {
+ var now = Date.now();
+ var end = new Date(now).toISOString().substr(0, 19); // 2018-06-13T16:52:30.995Z
+ var begin = new Date(now - days * 60*60*24 * 1000).toISOString().substr(0, 19);
+ return '&begin=' + begin + '&end=' + end;
+}