Just in case, duplicate my comment from ZBX-10789

I guess it happens, because delay override in if-else statement in include/classes/graphdraw/CLineGraphDraw.php:285

 $this->items[$i]['delay'] = max($this->items[$i]['delay'], SEC_PER_HOUR);

delay will be 3600

i am try to little edit this if-else statement in include/classes/graphdraw/CLineGraphDraw.php:285 and add if-else statement like in include/classes/graphdraw/CLineGraphDraw.php:2659 and now it correctly work for graphs with trends data.

@@ -281,8 +281,16 @@
 						' AND clock<='.zbx_dbstr($to_time).
 					' GROUP BY itemid,'.$calc_field
 				);
-
-				$this->items[$i]['delay'] = max($this->items[$i]['delay'], SEC_PER_HOUR);
+				
+				
+				    foreach ($this->items[$i]['intervals'] as $interval) {
+					if ($interval['type'] == ITEM_DELAY_FLEX_TYPE_SCHEDULING && $this->items[$i]['delay'] == 0) {
+					    $this->items[$i]['delay'] = 0;
+					}
+					else{
+					    $this->items[$i]['delay'] = max($this->items[$i]['delay'], SEC_PER_HOUR);
+					}
+				    } 			}
 
 			if (!isset($this->data[$this->items[$i]['itemid']])) {

But, i am not very good in php, so i am not sure that this is good way for fix

(1) No translation strings changed.

sasha CLOSED

Fixed in the development branch svn://svn.zabbix.com/branches/dev/ZBX-11057

(2) Code style
include/classes/graphdraw/CLineGraphDraw.php:2735 - do we really need static function? And maybe this function could be placed in other class, because it is not directly related to graphs.

vitalijs.cemeris As discussed with sasha, hasScheduling() helper method should not be moved.

RESOLVED in r62171

gunarspujats CLOSED

Tested.

Fixed in:

• pre-3.0.5.rc1 r62192
• pre-3.2.0beta3 r62195