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better rounding

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This commit is contained in:
Justin Otherguy 2011-01-09 22:00:00 +01:00
parent 929a4f7c39
commit 01a150adf5
1 changed files with 3 additions and 3 deletions
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6
htdocs/frontend/javascripts/frontend.js
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@ -368,11 +368,11 @@ vz.entities.loadData = function() {
.attr('title', $.plot.formatDate(new Date(entity.data.max.timestamp), '%d. %b %h:%M:%S', vz.options.plot.xaxis.monthNames));
}
if (entity.data.average) {
$('#entity-' + entity.uuid + ' .average').text(Math.round(entity.data.average/vz.options.rounding)*vz.options.rounding);
// rounding: Math.round rounds to whole numbers; to round to one decimal (e.g. 15.2) we multiply by 10 (resp. divide through 0.1), round and reverse the multiplication again; therefore "vz.options.rounding" needs to be set to 0.1 in that case
$('#entity-' + entity.uuid + ' .average').text(Math.round(entity.data.average*Math.pow(10, vz.options.rounding))/Math.pow(10, vz.options.rounding));
// rounding: Math.round rounds to whole numbers; to round to one decimal (e.g. 15.2) we multiply by 10, round and reverse the multiplication again; therefore "vz.options.rounding" needs to be set to 1 (for 1 decimal) in that case
}
if (entity.data.last) {
$('#entity-' + entity.uuid + ' .last').text(Math.round(entity.data.last/vz.options.rounding)*vz.options.rounding);
$('#entity-' + entity.uuid + ' .last').text(Math.round(entity.data.last*Math.pow(10, vz.options.rounding))/Math.pow(10, vz.options.rounding));
}
}, vz.drawPlot, 'data')
);