Add $__range_series variable for calculating function over the whole series, #531

src/datasource-zabbix/datasource.js

@@ -111,6 +111,9 @@ export class ZabbixDatasource {
       let timeFrom = Math.ceil(dateMath.parse(options.range.from) / 1000);
       let timeTo = Math.ceil(dateMath.parse(options.range.to) / 1000);
 
+      // Add range variables
+      options.scopedVars = Object.assign({}, options.scopedVars, utils.getRangeScopedVars(options.range));
+
       // Prevent changes of original object
       let target = _.cloneDeep(t);