Just found this thread and wanted to ask if you need to modify the adq.format file too. If you don't, then as soon as u update the indices, the volume charts will be out of whack.
On the other hand, if u put the $VOLFACTOR 0.001 in the aqd.format file, that will reduce all stock volumes by 1000. What a dilemna !!!! Thanks all for feedback. --- In [email protected], "Terry" <[EMAIL PROTECTED]> wrote: > > But this would give wrong answers for volume (it'd be 2 billion low). > See Tomasz answer. > > > > Hello, > > > > Just add > > $VOLFACTOR 0.001 > > to your aqh.format file (inside Formats subdirectory) > > and you will get volume expressed in thousands of shares > > (or use $VOLFACTOR 0.01 for hundreds of shares) once you re- download the > history. > > > Best regards, > Tomasz Janeczko > amibroker.com > > > > -- > > Terry > > -----Original Message----- > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of Chris Graham > Sent: Monday, April 24, 2006 12:34 > To: [email protected] > Subject: RE: [amibroker] Negative volume on downloaded data from Yahoo > > > > I use ABS( ) to convert the negative number into a positive one: > > > > MyVol = ABS(V); > > Plot(MyVol,"Volume"... > > > > > > regards > > Chris > > _____ > > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of Terry > Sent: Tuesday, 25 April 2006 2:08 AM > To: [email protected] > Subject: RE: [amibroker] Negative volume on downloaded data from Yahoo > > > > This has been discussed several times before. Back adjusted data changes > the volumes so the adjusted price * adjusted volume still gives correct > answers. Volumes can get so large they exceed 32 bit resolution and > "roll-over" to a negative value. You can change how volume is handled to > get Volume/1000 or whatever to avoid this. > > Unfortunately, I do not remember the variable to adjust. > > -- > Terry > -----Original Message----- > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of yokehg > Sent: Sunday, April 23, 2006 07:16 > To: [email protected] > Subject: [amibroker] Negative volume on downloaded data from Yahoo > > I just notice that the negative volume on downloaded historical data > from Yahoo! is due to overflow data in Amibroker. (It's not Yahoo! > mistake which I've been thought so far. I'm sorry Yahoo! :-) ) > > So I convert the negative volume data, simply by using this formula to > my favourit volume indicator: > 2*2147483647+V > and it works as I expect. > > However, lately on new version of Amibroker (or Amiquote?), it looks > like that it has been 'fixed' (I'm not sure which version it has been > started), so that the volume that is greater than 2147483647 is > interpreted as 2147483647, which I don't think it is not a good idea. > > Hope Amibroker will rectify this on next version. > > > > > > > > Please note that this group is for discussion between users only. > > To get support from AmiBroker please send an e-mail directly to > SUPPORT {at} amibroker.com > > For other support material please check also: > http://www.amibroker.com/support.html > > > Yahoo! Groups Links > > > > > > > > > > Please note that this group is for discussion between users only. > > To get support from AmiBroker please send an e-mail directly to > SUPPORT {at} amibroker.com > > For other support material please check also: > http://www.amibroker.com/support.html > > > > > > > _____ > > YAHOO! GROUPS LINKS > > > > * Visit your group "amibroker > <http://groups.yahoo.com/group/amibroker> " on the web. > > > * To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > > * Your use of Yahoo! Groups is subject to the Yahoo! > <http://docs.yahoo.com/info/terms/> Terms of Service. > > > > _____ > ------------------------ Yahoo! Groups Sponsor --------------------~--> Check out the new improvements in Yahoo! Groups email. http://us.click.yahoo.com/6pRQfA/fOaOAA/yQLSAA/GHeqlB/TM --------------------------------------------------------------------~-> Please note that this group is for discussion between users only. To get support from AmiBroker please send an e-mail directly to SUPPORT {at} amibroker.com For other support material please check also: http://www.amibroker.com/support.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/amibroker/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
