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To: Webb B Blackman Jr who wrote (7838)11/17/1998 8:56:00 AM
From: Richard Estes  Read Replies (2) | Respond to of 11149
 
I modified it to show only sell signals, ie. SAR below price)

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Webb, you go long if SAR is below price, you would sell or short when Sar is above price. SAR is mostly used as a stop measure. The place to reverse trade.

The primary pivot is the best, but with a trending stock, away from base you might move to major. I use 2.63 and -1.63 for SD with H/L flip. As for starting point, un-automatic, find the last low or high that you feel is of importance to your plan of trading.



To: Webb B Blackman Jr who wrote (7838)11/17/1998 2:02:00 PM
From: TechTrader42  Read Replies (1) | Respond to of 11149
 
I modified it to show only sell signals, ie. SAR below price

Webb: You'd better check your scan, as Richard says. When SAR falls below the price, it's a buy signal. Take a look at SAR in Metastock, and you'll see.

Someone inadvertently mixed up the buy and sell signals in one of the SAR scans posted on this thread, I seem to remember. The error was fixed quickly. You might want to make sure you have the correct version. Here it is:

//SAR, by Jeff Grover (with some changes by Bob Jagow)
input = "portfoli.lst";
output = "sar.lst";
float accdelta, accfac, SIP, SAR, SARp, xprice;
integer j, count, buysell,firstday, flipday;
accdelta := .02;
accfac := accdelta;
count := -100;
buysell := 0; // 1-long, 0-short
firstday := 1;
SAR := high(count);
SARp := SAR;
SIP := SAR;
xprice := high(count);

for j = count-1 to 0 step 1 do
if( buysell = 0 ) then // short position
if( firstday = 1 ) then
SAR := SIP;
firstday := 0;
else
if( low(j) < xprice ) then
xprice := low(j);
if( accfac < .2 ) then accfac := accfac + accdelta; endif;
endif;
SAR := SARp - accfac * abs(xprice - SARp);
endif;

if( SAR <= high(j) or SAR <= high(j-1) ) then
if( high(j) >= high(j-1)) then SAR := high(j);
else SAR := high(j-1); endif;
buysell := 1;
flipday:= j;
accfac := accdelta;
SIP := xprice;
firstday := 1;
endif;
endif;

if( buysell = 1 ) then // long position
if( firstday = 1 ) then
SAR := SIP;
firstday := 0;
else
if( high(j) > xprice ) then
xprice := high(j);
if( accfac < .2 ) then accfac := accfac + accdelta; endif;
endif;
SAR := SARp + accfac * abs(xprice - SARp);
endif;

if( SAR >= low(j) or SAR >= low(j-1) ) then
if( low(j) <= low(j-1)) then SAR := low(j);
else SAR := low(j-1); endif;
buysell := 0;
flipday:= j;
accfac := accdelta;
SIP := xprice;
firstday := 1;
endif;
endif;

SARp := SAR;
next j;

if buysell = 0 then println symbol," Sell on ",
date(flipday),",",close(flipday):6:3; endif;
if buysell = 1 then println symbol," Buy on ",
date(flipday),",",close(flipday):6:3; endif;