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Why not keep things simple and use
OBV()?
Bill
----- Original Message -----
Sent: March 14, 2009 8:00 PM
Subject: [amibroker] indicator- % of vol
that is negative
Hey everyone. I've been working on building an indicator and
have been unable to get it to work.I've been using AB mostly for charting
,explorations,etc,and have only built a couple of very simple indicators up to
this point,so I'm having a bit of a hard time with this and am hoping someone
can point me in the right direction.
Basically, I'd like to look at the
Dow and find what % of the volume at the end of each day is negative and what
% of the point change is negative and plot it as a line on a 0-100 scale.(it
would look similar to an RSI).
Each day,the indicator would tally up
all of the negative point changes,and all the positive changes and find what %
of the points were negative.It would also do the same for the vol.
For
example, pnp=tnp/(tpp+tnp)* 100; represents ,"the % of neg. points
= total neg. pts / (total positive pts + total neg. points)*100"
I'd
would do the same for the volume and plot each line seperately on the same
graph.
I started by assigning each symbol in the Dow a
variable,
v_aa=Foreign("AA","V",1); (for the
volume)
p_aa=Foreign("AA","C",1); (for the points)
I
then used IIF to find which stocks closed lower than yesterday and assigned it
a variable depending on whether it was positive or negative.
np_aa= IIf (p_aa<Ref(p_aa,-1),Ref(p_aa,-1) - p_aa, 0);
"
/*if todays close is < yesterdays close,subtract todays close from
yesterdays and assign it the varible "np_aa", else nothing*/"
..and
again for positive close.
pp_aa= IIf
(p_aa<Ref(p_aa,-1),0,p_aa-Ref(p_aa,-1) );
"/*if todays close
is < yesterdays close,do nothing, else subtract yesterdays close from
todays and assign it the varible "pp_aa"*/ "
So now I have
a two lists of Dow stocks that have closed up for the day, closed
down,and I add each list up to come up with a total of up points and a total
of down points.
/* find total up points. tpp="total
positive points"*/
tpp =(pp_aa+ pp_axp+ pp_ba+ pp_bac+ pp_c+ pp_cat+
pp_cvx+ pp_dd+ pp_dis+ pp_ge+ pp_gm+ pp_hd+ pp_hpq+ pp_ibm+ pp_intc+
pp_jnj+ pp_jpm+ pp_kft+ pp_ko+ pp_mcd+
pp_mmm+ pp_mrk+ pp_msft+ pp_pfe+ pp_pg+ pp_t+ pp_utx+ pp_vz+ pp_wmt+
pp_xom);
/* find total down points. tnp="total negative
points"*/
tnp=(np_aa+ np_axp+ np_ba+ np_bac+ np_c+ np_cat+ np_cvx+
np_dd+ np_dis+ np_ge+ np_gm+ np_hd+ np_hpq+ np_ibm+ np_intc+
np_jnj+ np_jpm+ np_kft+ np_ko+ np_mcd+ np_mmm+
np_mrk+ np_msft+ np_pfe+ np_pg+ np_t+ np_utx+ np_vz+ np_wmt+ np_xom);
I
use the same method for finding the up and down volume.
Then I find the
% of the total points that is negative..
/* find the percentage of negative points. pnp="percentage of
neg.points"*/
pnp=tnp/(tpp+tnp)* 100;
Again I do the same for
the volume.
Now I have two seperate values that I want to plot on the
same graph with a 0-100 scale,which I tried do this
way...
SetChartOptions(0,0,chartGrid10|chartGrid90);
Plot(pnp,"% of neg.
pts.",colorYellow);
Plot(pnv,"% of neg. vol.",colorBlue);
First,the
header,or title (I'm not sure of the correct term) lists the stock which is
displayed in the chart above the indicator.I thought using the foreign
function would allow me to plot an indicator based on data other than the
symbol that is being currently displayed.
Also I have no data showing
up in the indicator window. It says "empty" for both vol. and
points.
Sorry for the long post,I just wanted to give enough info.I
hope I've been clear enough for people to have an idea what I'm trying to
do.I'm sure I'm making this a lot more complicated than it needs to be,but
like I said I'm still trying to get the hang of programming.If anyone could
give me a few pointers and a nudge in the right direction it would be greatly
appreciated. Thanks . -jim
------------------------------------
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**** 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/
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