The best luck I have had to simulate this is:
Try 2 sets of Donchian Channels:
1) with period = 2 (or 3 or 4)
2) with period = 24 (or 36 or 48)

Short period Donchian will show swing high and lows. The Long period Donchian will show the main tops and bottoms.

For the Long Donchian, you will have to try different periods to get the main tops and bottoms.

The Gann indicator from the link is not good for Bar Open logic. It is calculated from Highs and Lows of the last 2 bars, but sometimes in real trading, it is impossible to know the highest and the lowest. I think Mr Popov used to include a demo strategy with the Zig Zag indicator to show this type of problem.

This picture from linked page also shows an example:

If the code is not careful in the indicator, it will probably have the "Repainting Bug". The Donchian Channels are better, they avoid this kind of bug because they use a value from the previous bars to draw.

Ok, picture attached below.
I agree -- if careful, the indicator can avoid the repaint bug. Sometimes it will have 1 or 2 bars at the end with no indicator values. They have to wait for the price event to happen.

hmm, it repaints in that way that it adjusts the recent low point as new bars come in. It will be tough to incorporate the logics properly, otherwise backtest and real trade will not match.

Ahmed, consolidation is when the swing line is not extended for some time?

I think I understand now. The indicator will not have a value -- until the second new high or second new low. Before then, like the screenshot, it does not have a value.

Upon completion of the second new high or low, the indicator draws the line to that bar. We don't always see the diagonal line crossing through the bars, crossing from swing high to swing low. And, that is ok,  those middle values are not used anyway, they are only drawn to help use see the the line.

I searched info on this, and I stumbled upon this: http://fxcodebase.com/code/download/fil … 33&t=1

Based on the screenshot above, I see following problem. Sure, it is a matter of definition, but I consider it a repaint.

Difficult to make my point here, but I'll try.

At the beginning of the 3rd bar we have a value in the bar "L" and 2, according to the black trendline, if data would end after bar 3, FSB would enter into long position if logic "Trend is up" is used. If there's more data, it changes the trendline, see red and lime trendlines. What I'm trying to say here is data points are shifted and FSB would use only the last one, therefore backtest would be absolutely useless.

Tell me Ahmed, is the first screenshot correct or not? Can the Gann trendline be like a chain, so to speak, which follows the price precisely step by step (ie up-down-up-up-up), or more like the the zigzag (up-down-up-down)?

Keep these ideas going, I often find your posts useful!

Thanks for the feedback, I've been trying to figure out how to get a trend out of Donchians for a long time. This might be it.

I see your point, the repaint can be avoided. Gann draws from lowest to 2nd consecutive high, then to 3rd consecutive high. Repaint would happen if draw from lowest to 2nd consecutive high, then redraw from lowest to 3rd consecutive high.

It's like draw the upper donchian when there are new highs; then switch to draw lower donchian when there are new lows. Don't draw if the latest bars are in between.

I'll try to do it, maybe 2 -3 days.

If it's not too much trouble, share them please!

Thanks!

metastock:

Gann-Trend

{Swing Direction}
Sd:= FmlVar("GANN-Swing","TD1") ;
{Swing Change High}
Sch:=If(Sd=1 AND Ref(sd,-1)=-1,
{then}1,
{else}0);
{Swing Change Low}
Scl:=If(Sd=-1 AND Ref(Sd,-1)=1,
{then}1,
{else}0);
{Peak Value}
Pv:=If(Scl=1,
{then}HighestSince(1,Sch=1,H),
{else}0);
{Trough Value}
Tv:=If(Sch=1,
{then}LowestSince(1,Scl=1,L),
{else}0);
{Trend Direction}
Td:=If(H>ValueWhen(1,Pv>0,Pv),
{then}1,
{else}If(L<ValueWhen(1,Tv>0,Tv),
{then}-1,
{else}0));
{UpTrend=1 DownTrend =-1}
Tdv:=ValueWhen(1,Td<>0,Td);
Tdv;

Some Mt4 indicator attached here

see also:

http://www.expertadvisordownloads.com/gann-2/?lang=is

links show   gann indicators for fxcm charts software in lua
http://fxcodebase.com/code/viewtopic.php?f=17&t=3845&p=9400&hilit=gann#p9400
http://fxcodebase.com/code/search.php?st=0&sk=t&sd=d&keywords=gann&fid%5B%5D=17&start=10
http://fxcodebase.com/code/viewtopic.php?f=17&t=227&p=8544&hilit=gann#p8544
http://fxcodebase.com/code/viewtopic.php?f=17&t=294&p=7235&hilit=gann#p7235

Thanks Ahmed! The very last thing is interesting indeed, I tried to see what "A-la Clyde Lee Patterns" are, but all I found was http://commons.wikimedia.org/wiki/File: … otball.jpg

Have you tried that last ZZ on MT5? I wonder does it work similarly like an ordinary ZZ in terms of speed etc. I will give it a shot someday, hopefully I can crack the code.

Many Thanks krog

I have two indicators in MT4 formate for gann swing , but didn't find all over the Internet any gann trend indicators to be drawn to connect all candles  so we have to make our test without comparison 

but regarding gann swings or gann zigzag we could compare the result with some MT4 indicators ,

1-GannZigZag

2-GannSwingsXV  " i think this one is the nearest one to be true" this indicator has an additional option " shows highs and lows" which spot some highs and lows with dots if we connect the dots visually i think it will draw indicator line like you have done " i will check and try to make the comparison"

They are in the attached Zip file " with another nice indicators "