| 
 
 Hi Mi,   In your first statement, several possible reasons could cause a value 
of 0.   If your data has a 0 for the C, H, L or V then you are 
multiplying by 0 which will return 0.   If H equals L then H-L 
will equal 0.      When I code your first line and apply it randomly to stocks in my database, 
I do not get 0. Are you using Forex or some data that carries out to 4 decimal 
places?  Have you set AB to display data at 4 decimal places (Tools -> 
Miscellaneous )?   Maybe provide the entire code and something else will suggest a 
solution.   Peace and Justice   ---   Patrick 
  ----- Original Message -----  Sent: Wednesday, January 27, 2010 11:50 
  AM Subject: [amibroker] 
  SUM(???????????) Hi all,
 
 III = Sum((2*C-H-L)/(H-L)*V,21);
 
 Please 
  can anybody tell me why III is {EMPTY}
 I tried already this doesn't worked 
  at all
 III = (2*C-H-L)/(H-L)*V;
 III = Sum(III,21);
 
 
 Thanks for 
  your help
 
 
 
 
 ------------------------------------
 
 **** 
  IMPORTANT PLEASE READ ****
 This group is for the discussion between users 
  only.
 This is *NOT* technical support channel.
 
 TO GET TECHNICAL 
  SUPPORT send an e-mail directly to
 SUPPORT {at} amibroker.com
 
 TO 
  SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
 http://www.amibroker.com/feedback/
 (submissions 
  sent via other channels won't be considered)
 
 For NEW RELEASE 
  ANNOUNCEMENTS and other news always check DEVLOG:
 http://www.amibroker.com/devlog/
 
 Yahoo! 
  Groups Links
 
 <*> To visit your group on the web, go 
  to:
 http://groups.yahoo.com/group/amibroker/
 
 <*> 
  Your email settings:
 Individual Email | 
  Traditional
 
 <*> To change settings online go 
  to:
 http://groups.yahoo.com/group/amibroker/join
 (Yahoo! ID required)
 
 <*> To change settings via 
  email:
 amibroker-digest@xxxxxxxxxxxxxxx
 amibroker-fullfeatured@xxxxxxxxxxxxxxx
 
 <*> 
  To unsubscribe from this group, send an email to:
 amibroker-unsubscribe@xxxxxxxxxxxxxxx
 
 <*> 
  Your use of Yahoo! Groups is subject to:
 http://docs.yahoo.com/info/terms/
 
 
 __._,_.___
 
 **** IMPORTANT PLEASE READ ****
 This group is for the discussion between users only.
 This is *NOT* technical support channel.
 
 TO GET TECHNICAL SUPPORT send an e-mail directly to
 SUPPORT {at} amibroker.com
 
 TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
 http://www.amibroker.com/feedback/
 (submissions sent via other channels won't be considered)
 
 For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
 http://www.amibroker.com/devlog/
 
 
 
 
 ![]()  
 
 __,_._,___
 |