Big issue with the bar magnifier [FIXED]

duration · Postby **duration** » 05 Jun 2010

Hello,

TO FIX IT: start regedit, go to shaper and change maxbarscount to a higher value (20,000,000 worked for me, it seems higher values would make the software unstable)

I believe I have found an issue with the bar magnifier.

Here is a short signal I wrote:

Code: Select all

value1 = xaverage( close, 10 ) ;

value2 = xaverage( close, 20 ) ;



condition1 = date <> 1100507 and date <> 1100402 and date <> 1100305 and date <> 1100205 and date <> 1100101 ;



if condition1 and value1 crosses above value2 then buy this bar on close ;



if condition1 and value1 crosses below value2 then sellshort this bar on close ;

setprofittarget( 100 ) ;

When backtested without bar magnifier, no problem. When the bar magnifier is on (1 TICK resolution), condition1 is ignored and the trades are not plotted correctly.

Please have a look on the screenshots.

Many thanks,

Henrik · Postby **Henrik** » 05 Jun 2010

Downloaded Ticks or realtime-recorded ticks?

TJ · Postby TJ » 05 Jun 2010

regarding this line:

condition1 = date <> 1100507 and date <> 1100402 and date <> 1100305 and date <> 1100205 and date <> 1100101 ;

what would be the value of condition1 on the following dates?
1100506
1100507
1100508

ps. generic variable name will always get you.

duration · Postby **duration** » 05 Jun 2010

Downloaded Ticks or realtime-recorded ticks?

Hi Henrik,

It is offline ASCII data, coming from real-time recorded ticks.

duration · Postby **duration** » 05 Jun 2010

regarding this line:

condition1 = date <> 1100507 and date <> 1100402 and date <> 1100305 and date <> 1100205 and date <> 1100101 ;

what would be the value of condition1 on the following dates?
1100506
1100507
1100508

ps. generic variable name will always get you.

Hi TJ,

I know you don't like generic variables

I wrote this very quickly to test the bar magnifier, but I believe the value would be:

1100506 FALSE
1100507 TRUE
1100508 FALSE

?

TJ · Postby TJ » 05 Jun 2010

regarding this line:

condition1 = date <> 1100507 and date <> 1100402 and date <> 1100305 and date <> 1100205 and date <> 1100101 ;

what would be the value of condition1 on the following dates?
1100506
1100507
1100508

ps. generic variable name will always get you.
Hi TJ,

I know you don't like generic variables

I wrote this very quickly to test the bar magnifier, but I believe the value would be:

1100506 FALSE
1100507 TRUE
1100508 FALSE

?

I don't think the big issue is with the bar magnifier,
but in your condition1.
... you should take a closer look at your logic.

A meaningful variable name can help you visualize your logic;
you will spend less time running around in circles (debugging),
and more time running your strategy.

duration · Postby **duration** » 06 Jun 2010

Hi TJ,

Would it be :

1100506 TRUE
1100507 TRUE
1100508 FALSE

?

Because a general variable is true by default?

TJ · Postby TJ » 06 Jun 2010

Hi TJ,

Would it be :

1100506 TRUE
1100507 TRUE
1100508 FALSE

?

Because a general variable is true by default?

you should always test the value with a plot before proceeding to buy/sell orders.

e.g. (set the plot to a large red dot)

Code: Select all

if condition1 = true then plot10( close, "cond1=true")

else noplot(10);

TJ · Postby TJ » 06 Jun 2010

...
Because a general variable is true by default?

There is no default value.

Once you have set the logic,
the condition is constantly re-evaluated.
There can be only one of 2 outcomes:
either True, or False.

duration · Postby **duration** » 07 Jun 2010

Hi TJ,

I use the following:

Code: Select all

condition1 = date <> 1100507 and date <> 1100402 and date <> 1100305 and date <> 1100205 and date <> 1100101 ;



if condition1 = true then plot10( close, "cond1=true") 

else noplot(10);

And it plots a flat line at 1100507, 1100402, 1100305, 1100205 & 1100101.

I think it is working correctly no?

Sorry I don't see why the general variable cannot do the job