kibana-123
Version:
Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic
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JavaScript
var _ = require('lodash');
var moment = require('moment');
// Upsampling and downsampling of non-cummulative sets
// Good: average, min, max
// Bad: sum, count
module.exports = function (dataTuples, targetTuples) {
return _.map(targetTuples, function (bucket, h) {
var time = bucket[0];
var i = 0;
while (i < dataTuples.length - 1 &&
(Math.abs(dataTuples[i + 1][0] - time) < Math.abs(dataTuples[i][0] - time) ||
// TODO: Certain offset= args can cause buckets with duplicate times, eg, offset=-1M
// check for that, and only use the last of the duplicates. The reason this happens?
// What is 1M before Mar 30th? What about 1M before Mar 31st? Both are the last day
// in Feb. Something has to be chucked. If offsetting by M user might want to use
// fit=average
Math.abs(dataTuples[i + 1][0] - time) === Math.abs(dataTuples[i][0] - time))
) {
i++;
}
var closest = dataTuples[i];
dataTuples.splice(0, i);
return [bucket[0], closest[1]];
});
};