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<SPAN
class=867145602-28042003>Tomasz,
Thanks
for the variable period support. This opens some interesting possibilities. The
database tool will be a welcome addition to any one using
addtocomposite.
<SPAN
class=867145602-28042003>
Now if
you could just program some indicators that look into the future we could all
retire on some tropical beach with beautiful young things serving us
Margaritas......
Jayson
<FONT face=Tahoma
size=2>-----Original Message-----From: Tomasz Janeczko
[mailto:tj@xxxxxxxxxxxxx]Sent: Sunday, April 27, 2003 11:47
AMTo: amibroker@xxxxxxxxxxxxxxxSubject: [amibroker]
AmiBroker 4.33.0 BETA released
Hello,
A new beta version (4.33.0) of AmiBroker has just been
released.
It is available for registered users only from the members
area at:
<A
href="">http://www.amibroker.com/members/bin/ab4330beta.exe
If you forgot your user name / password to the members
area
you can use automatic reminder service at: <A
href="">http://www.amibroker.com/login.html
Contains new "Database purify tool" among other improvements.
For more details please read the following "READ ME"
text.
Best regards,Tomasz Janeczkoamibroker.com
AmiBroker 4.33.0 Beta Read Me
April 27, 2003 17:45
THIS IS AN EARLY BETA VERSION OF THE SOFTWARE. EXPECT BUGS
!!!
AGAIN: THIS IS AN EARLY BETA VERSION OF THE SOFTWARE. EXPECT BUGS
!!!
Backup your data files and entire AmiBroker folder
first!
INSTALLATION INSTRUCTIONS
IMPORTANT: This archive is update-only. You have to install full
version 4.30 first.
Just run the installer and follow the instructions.
Then run AmiBroker. You should see "AmiBroker 4.33.0 beta" written in the
About box.
CHANGES FOR VERSION
4.33.0 (as compared to 4.32.2)
Database purify tool implemented (available via Tools->Database
Purify)allows to detect missing/extra quotes, possible splits, invalid
OHLC relationshipApply to/range settings similar to AA window. You can
also right click over result list to add symbols to watch list and copy the
list to the clipboard (and paste it later to any other program for futher
use)
further improvements to AFL garbage collector, now looping regardless of
loop count requires the same amount of memory as just single pass of the code
(no growing allocated memory during loops).This enormously lowered memory
consumption for some formulas and increased the speed of some loops 3..4
times.
added variable period support to the following
functions:LinRegSlope,LinearReg,LinRegIntercept,StdErr,TSF
Sample code:
Plot( Close, "Test", colorBlack );
range = 15 * MA( ATR( 15 ), 50 ) / ATR( 15 );
//Plot( range, "range", colorBlue, styleOwnScale );Plot( LinearReg(
Close, range ), "Test", colorRed );
fixed sometimes incorrect output of variable-period version of LLV/HHV
fixed crash occuring when bad arguments were passed to the function (bug
introduced in 4.32.x).
CHANGES FOR VERSION
4.32.2 (as compared to 4.32.1)
second bug in experimental garbage collector fixed.
CHANGES FOR VERSION
4.32.1 (as compared to 4.32.0)
garbage collector was releasing memory too soon in some cases, now fixed.
CHANGES FOR VERSION
4.32.0 (as compared to 4.31.1)
added type check in IF/ELSE statements
added type check in array element assignment
error messages now numbered and display changed slightly
you can break running loop by pressing Shift+BREAK (Pause) key combination
calling COM objects works again (was broken in 4.31.x)
changed slightly the way TAB works in editor, if TAB is pressed any
selection is deselected to avoid accidential deletion of text
experimental: added 'agressive garbage collector' that extremely
decreases the amountof memory required to run AFL formula by releasing the
memoryused for temporary variables as soon as possible
(previouslytemporary memory was released at the end of formula
execution).A side-effect of new garbage collector is some speed up in
formula execution.
new tab in preferences for AFL engine settings
experimental feature, NOT for beginners, may be removed/modified in
future releases: new _TRACE( "string" ) AFL function addedthat
allows to write debug messages from AFL code to system debug viewer.(it
calls internally OutputDebugString Win API function).To view debug
messages you have to run DebugView freeware program from
http://www.sysinternals.com/
CHANGES FOR VERSION
4.31.1 (as compared to 4.31.0)
fixed bug introduced in 4.31.0 causing no text output in
commentary/interpretation
CHANGES FOR VERSION
4.31.0 (as compared to 4.30.0)
Workspace window uses "icon font" set in the Windows settings instead of
hard coded Tahoma 8
for better readability and ClearType(tm) compatibility on WinXP, all
dialog windows use now 'MS Shell Dlg' face name that maps to standard MS Sans
Serif on Win 9x/Me/NT and Tahoma on Win 2K and XP.
rewritten AFL parser, now formula is parsed and coverted to syntax tree
and then interpreted. This would allow further improvements including
compilation. This allowed also to add loops/if-else statements.
implemented IF/ELSE statement, WHILE and FOR loops:The same basic
'for' loop in AFL is 2..3 times faster than in JScriptSyntax follows
C++/JScript style:
while( conditional_expression ) statement;
for( initializer_part; conditional_expression; iterator_part )
statement;
if( conditional_expression ) statement;
if( conditional_expression )
statement;elsestatement;
implemented compound statements: these are blocks of statements
enclosedin opening and closing curly brace
{statement1;statement2;...statementN;}
compound statement can appear anywhere when simple statement can.
For example:
i = 10;while( i < 20 ){Plot( MA( Close, i ), "MA" +
WriteVal( i, 0 ), colorBlack + i );i = i + 1;}
implemented C-style postfix and prefix increment/decrement operators
i = 10;WriteIf( i++ );WriteIf( ++i );WriteIf( i
);
implemented array element access (subscript) operator []:
WriteVal( Close[ 0 ] ); // prints the first bar of close
array
/* a sample low-level implementation of exponential moving average in
AFL */
myema[ 0 ] = Close[ 0 ];
for( i = 1; i < BarCount; i++ ){myema[ i ] = 0.1 * Close[
i ] + 0.9 * myema[ i - 1 ];}
added built-in constant 'BarCount' that returns number of bars available in
arrays (the number of elements of array)When QuickAFL is turned on it may
be less than true number of bars because QuickAFL feature attempts to use only
visible bars (and few before). You can control how many bars the formula
requires using SetBarsRequired() function
implemented infinite-loop protection. Nice if you forgot to increment
counter variable in 'for' loop :-)
tab key now works without need to press ALT/CTRL in AFL editors
added C-like synonyms for logical ADD/OR/NOT: &&, ||, !
/* a sample low-level implementation of Profit-target stop in
AFL: */
Buy = Cross( MACD(), Signal() );
priceatbuy=0;
for( i = 0; i < BarCount; i++
){ if( priceatbuy == 0 && Buy[ i
] ) priceatbuy = BuyPrice[ i ];
if( priceatbuy > 0 &&
SellPrice[ i ] > 1.1 * priceatbuy
) { Sell[
i ] = 1; SellPrice[ i ] = 1.1 *
priceatbuy; priceatbuy =
0; } else Sell[
i ] = 0;}
/* sample EMA rainbow */
Plot( Close, "Price", colorBlack, styleCandle );for( Range = 15;
Range < 100; Range++ ) Plot( EMA( Close, Range ),
"MA"+WriteVal(Range,0), colorRose + Range % 8, styleNoLabel );
HOW TO REPORT BUGS
If you experience any problem with this beta version please send detailed
description of the problem (especially the steps needed to reproduce it) to <A
href="">bugs@xxxxxxxxxxxxx
Send
BUG REPORTS to bugs@xxxxxxxxxxxxxSend SUGGESTIONS to
suggest@xxxxxxxxxxxxx-----------------------------------------Post
AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx (Web page: <A
href="">http://groups.yahoo.com/group/amiquote/messages/)--------------------------------------------Check
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href="">http://groups.yahoo.com/group/amibroker/files/groupfaq.html
Your use of Yahoo! Groups is subject to the <A
href="">Yahoo! Terms of Service.
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Send BUG REPORTS to bugs@xxxxxxxxxxxxx
Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
-----------------------------------------
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(Web page: http://groups.yahoo.com/group/amiquote/messages/)
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