<selectclass="gf-form-input"ng-model="ctrl.panel.xaxis.histogramValue"ng-options="v as k for (k, v) in ctrl.histogramValues"ng-change="ctrl.xAxisOptionChanged()"></select>
<inputtype="number"class="gf-form-input max-width-8"ng-model="ctrl.panel.xaxis.buckets"placeholder="auto"ng-change="ctrl.render()"ng-model-onblurbs-tooltip="'Number of buckets'"data-placement="right">