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Hello,
I have an exploration that works very well (thanks to some help with
the looping construct from TJ), however, because it is a large
exploration, I wanted to highlight certain results conditionally to
mke them easier to locate.
The problem is, as soon as I add the arguments for the cell color, I
get a system crash
This works flawlessly:
AddColumn(x=IIf(interesting, netpct,0),"intNetPct"+fac, 1.2);
When I add this to it:
AddColumn(x=IIf(interesting, netpct,0),"intNetPct"+fac, 1.2,
colorDefault, y=IIf(netpct >= 10, colorGreen, colorDefault));
...I get the following system crash (on either "Check" or "Explore"):
(CRASH DUMP):
-------------------------------------------------------------------
AmiBroker version 4.44.0
( cooltool.dll 4.44.0, mfc42.dll 6.0.8665, msvcrt.dll 6.1.8924 )
Microsoft Windows 2000 version 5.0 (Build 2195)
Service Pack 2.0
Common Controls: 5.81
Unhandled exception
Type: CSysException
Code: c0000005
Description: ACCESS VIOLATION
Address: 447456
AddColumn(x=IIf(interesting, netpct,0),"intNetPct"+fac, 1.2,
colorDefault, IIf(netpct >= 10, colorGreen, colorDefault));
}
^
(occurred during AFL formula execution)
AFL Parser status:
Processing stage: EXECUTE
Formula ID: 0 ()
Action 5 (BACKTEST)
Additional information:
Number of stock loaded: 25389
Currently selected stock: VNWI
Number of quotes (current stock): 925
Workspace:
Data source = (default), Data local mode = 0, NumBars = 2600
Preferences:
Data source = QP2 , Data local mode = 1, NumBars = 2600
Command history:
2828 - Shows Analyser - a tool to test systems & explore market--Auto-
Analyser
Cache manager stats:
Number of list elements: 3
Number of map elements: 3
Hash table size: 5987
Memory status:
MemoryLoad: 46 %
TotalPhys: 261668K AvailPhys: 139768K
TotalPageFile: 1288600K AvailPageFile: 1111620K
TotalVirtual: 2097024K AvailVirtual: 1874952K
Last Windows message:
HWnd: 0x604b4
Msg: 0x0110
wParam: 0x000604b6
lParam: 0x00000000
-------------------------------------------------------------------
The complete source code:
-------------------------------------------------------------------
per = 65;
MAvol = MA(V, per);
Minvol = 100000;
MinPrice = 4.00;
MaxPrice = 20.00;
MinIrc = 2;
R1 = ATR(per);
irc = (r1/C)*100;
L1 = Ref(L, -1);
C2 = Ref(C, -2);
Filter = (BuyPrice >= MinPrice) AND (BuyPrice <=MaxPrice) AND (V >=
Minvol) AND (MAvol >= Minvol) AND (irc >= MinIrc);
AddTextColumn(FullName(),"Name");
AddColumn(MarketID(0), "Mkt", 1.0);
AddTextColumn(MarketID(1), "Market");
AddColumn(SectorID(0), "Sectr", 1.0);
AddTextColumn(SectorID(1), "Sector");
AddColumn(IndustryID(0), "Ind", 1.0);
AddTextColumn(IndustryID(1), "Industry");
AddColumn(C, "Price", 1.2);
AddColumn(MAvol/1000, "Vol/K", 1.0);
AddTextColumn(Name(), "Ticker");
AddColumn(R1, "1R", 1.2);
AddColumn(irc, "1R/C", 1.2);
AddColumn(per, "per", 1.0);
totalWins = 0;
totalLosses = 0;
totalWinPct = 0;
totalNetPct = 0;
totalInt = 0;
totalRawWins = 0;
totalRawLosses = 0;
totalRawWinPct = 0;
totalRawNetPct = 0;
totalRawInt = 0;
for( i=870; i<=970; i++ ) {
fac=i*.001;
filled=(L1 < C2* fac);
profitable =((O/(C2* fac))-1 > 0.01);
profitPct=((O/(C2* fac)-1)*100);
trades=(Sum(IIf((filled) AND (Filter), 1, 0), per));
frequent=(trades>=5);
wins=(Sum(IIf((filled) AND (Filter) AND (frequent) AND
(profitable), 1, 0), per));
rawWins=(Sum(IIf((filled) AND (Filter) AND (profitable), 1,
0), per));
Losses = trades-wins;
rawLosses = trades-rawWins;
winpct=(wins/trades)*100;
rawWinpct=(rawWins/trades)*100;
winalot= winpct>=65;
rawWinalot= rawWinpct>=65;
netpct=(Sum(IIf((filled) AND (Filter) AND (frequent)
AND (winalot), profitPct,0), per));
rawNetPct=(Sum(IIf((filled) AND (Filter) AND (rawWinalot),
profitPct,0), per));
interesting = (netpct >= 10) AND (frequent) AND (winalot);
rawInteresting = (rawNetpct >= 10) AND (winalot);
totalWinPct = totalWinPct+winpct;
totalRawWinPct = totalRawWinPct+RawWinpct;
totalNetPct = totalNetPct+netpct;
totalRawNetPct = totalRawNetPct+rawNetPct;
totalInt = totalInt+interesting;
totalRawInt = totalRawInt+rawInteresting;
totalWins = totalWins+wins;
totalRawWins = totalRawWins+rawWins;
totalLosses = totalLosses+Losses;
totalRawLosses = totalRawLosses+rawLosses;
//score=IIf(frequent,(winpct*netpct)/100,
(winpct*netpct)/1000);
if(i%10==0){
AddTextColumn(Name(),"Ticker");
}
//AddColumn(trades,"#Trades"+fac,1.0);
//AddColumn(wins, "#Wins"+fac, 1.0);
//AddColumn(winpct,"winpct"+fac, 1.2);
AddColumn(netpct,"netpct"+fac, 1.2);
AddColumn(x=IIf(interesting, netpct,0),"intNetPct"+fac, 1.2,
colorDefault, IIf(netpct >= 10, colorGreen, colorDefault));
}
AddColumn(totalWins,"TotalWins", 1.2);
AddColumn(totalRawWins,"TotalRawWins", 1.2);
AddColumn(totalLosses,"TotalLosses", 1.2);
AddColumn(totalRawLosses,"TotalRawLosses", 1.2);
AddColumn(totalWinPct,"TotalWinPct", 1.2);
AddColumn(totalRawWinPct,"TotalRawWinPct", 1.2);
AddColumn(totalNetPct,"TotalNetPct", 1.2);
AddColumn(totalRawNetPct,"TotalRawNetPct", 1.2);
AddColumn(totalInt,"TotalInt", 1.2);
AddColumn(totalRawInt,"TotalRawInt", 1.2);
--------------------------------------------------------------------
My goal here is just to highlight cells of interest in this rather
large exploration.
I troubleshot so far by creating a very simple one line exploration
and then adding the cell coloring arguments to this small, simple
exploration. The result was, it still crashed the system as soon as
I added the cell-coloring arguments and hit "Check" or "Explore."
So then, I tried the code from the example in the AB help:
AddColumn( Close, "Close", 1.2 );
AddColumn( MACD(), "MACD", 1.4 , IIf( MACD() > 0, colorGreen,
colorRed ) );
AddTextColumn( FullName(), "Full name", 77 , colorDefault, IIf( Close
< 10, colorLightBlue, colorDefault ) );
....which worked by itself just fine, but when I copied this same
code to my exploration, again it crashed.
...Finally, I moved the above code to another location in my
exploration which was outside the loop, and then it worked without
crashing, but the problem now is, I need my code to work inside the
loop to get the information I am seeking.
So... Is this a known problem? Does the cell-coloring feature of add-
column not work inside AFL loops? Please forgive me if I have
overlooked any obvious things, or not tried hard enough on my own,
but I seem to have hit a wall here. This issue seems beyond my
current AB knowledge and skill.
Any suggestions for further troubleshooting appreciated.
Thanks,
Nick Molchanoff
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