Hi Mathew,
Yes it is simple, and my response wasn't complicated; that's the math
you use to look for the % delta of the close from a one period to
another. In the originally supplied code, the only change required
is if you wanted to look back more than one period, the default period is
one. But as I wrote, if all you want is to look back to the prior period
close, substitute 1 for P in the AddColumn statement. If you want even simpler
try this:
AddColumn(((C-Ref(C,-1))/Ref(C,-1)*100,"% Change from Prior Close", 3.2,
colorblack,colorwhite);
You only asked for the change from the prior close but from your
subject line I infer that you want it as of some intraday time (though your
original question didn't specify that). This code will report the
change from the prior day's close to the current latest close in your
data (intraday or end of day) when run as a daily timeframe (or week over
week on weekly, hour over hour on hourly, etc.). Now if you are
working with minute bars reporting other results in your exploration and
want the change from the prior day's close, that's different. I leave
it to you to learn some afl programming to find the answer if you want to run it
in minute timeframes (hint: look in the help file for inDaily).
{Gratuitous other suggestion: put the calculation in a chart title and watch it
change as the data comes in.} Share your learning if you do.
Peace and Justice --- Patrick
----- Original Message -----
Sent: Thursday, October 22, 2009 6:27
PM
Subject: [amibroker] Re: intraday %
change
Patrick, that solution is quite involved. It even requires me
to manually, intelligently change the periods every time..
there must
be a better way to do this? I imagine many others are interested in this for
intraday trading.. should be a simple problem
--- In amibroker@xxxxxxxxxxxxxxx, "NW
Trader" <ta4charts@xxx> wrote:
>
> Hi Maththewkho,
>
> Add the following to your exploration code (the P is a parameter
which will let you define the length of the comparison period, delete this
line and substitute 1 in the Addcolumn argument if you know that you will only
want a one day delta) :
>
> P = Param( "Periods", 1,1,50,1);
> AddColumn( ( (C-Ref(C,-P))/Ref(C,-P))*100,"% Delta from
"+WriteVal(-P,1) , 3.2, colorYellow,colorGreen);
>
> Peace and
Justice --- Patrick
> ----- Original
Message -----
> From: matthewkho
> To:
amibroker@xxxxxxxxxxxxxxx
> Sent: Wednesday, October 21, 2009 6:54
PM
> Subject: [amibroker] intraday % change
>
>
> for exploration, how would I get a stock's % change from
previous day's close?
>
>
>
>
------------------------------------
>
> ****
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
>
------------------------------------
****
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:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto: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/
![]()
__,_._,___
|