Hello Thomas,
Before
leaving this thread, I submitted a
suggestion today to the Wish List for an improvement on the alertif
function.
I showed it as High priority in view of its potential usefulness, and
the many
messages on the subject. The text of my suggestion follows:
“The alertif
function becomes
"locked up" and repeats an error message continuously when two
or more
alerts occur simultaneously.
This situation happens if the AFL program has, say, an
alert on
price and a separate alert on
volume. Then if the the price and volume alerts
occur at the
same time, the alertif begins
to "stutter" and repeat an error message.
The
workaround is to prioritize alerts so
that conflicts cannot happen, but this requires
additional
care and sophistication in the
programming.
The alertif
should be improved for a more
robust implementation.”
I hope that
covers the problem well enough
for now.
Regards,
Grover
Hello Grover,
i fully agree with you, the function has to be improved or corrected. I
have
searched the archive now but found no solution.
Ok, have to prioritize alerts, sounds good, but found no information on
how to
do that. Other informations i have found are that alerts should be
written so
that they not occur at the same time. In my opinion this is also no
solution.
If i would like to buy at any condition than this is my condition and
not any
other condition. So now i stop trying the alertif function until any
update is
available. It's a pity that we can not really use it as we all would
like to
use it.
Regards
Thomas
www.tradingbasis.com
Grover Yowell wrote:
Hi
Thomas,
I think that
the solution now is
that you have to prioritize alerts so that only one can fire (and
perhaps
complete) at any one time. I received some info from Hermann on this
board some time ago, lost the link so I can’t send it. It was
before my message #82061. His solution involved prioritizing the
alerts
so that there was no interference. At the time that I looked at it, it
looked
like more work than I wanted to devote to it.
At some time
back there TJ described the
implementation of the alertif which gave some insight on how it works.
You should be able to find all that discussion, there have been
boatloads of
messages on the subject.
For the
solution in the future, my
personal view, as a non-programmer, is that the implementation of the
function
should be improved. For the time being it provides the basic
functionality, but as we look at AB becoming more and more capable,
this is one
of the items to add to the To Do list. I have not sent in a request
myself since I saw various others commenting on the problem. TJ will
have
to assess what priority to assign.
Best regards,
Grover
Hi Grover,
i also have problems when i use two alerts simultaneously.
However i don't see any trick to solve it, because i have for example
the level
20 on my indicator for alert.
Now when the indicator crosses this level i want to get an email and
accoustic
alert only once per bar and i have a 60min interval.
Is there any way to solve this ? If yes, i would search all the
messages.
Regards
Thomas
www.tradingbasis.com
Grover Yowell wrote:
Hi
Ara,
I am pasting
from my message 82061 which
was a message to a fellow user:
“I have had
similar experiences,
more than one under a variety of conditions. The common
“denominator” which causes the problem is when one alert triggers
simultaneously with another. When that occurs it causes AB to
display the error message which you quoted stating that you need double
back
slashes (even though you have double back slashes in your program),
and
then the program gets into a loop and continues to repeat the alert.
The
workaround which I got in a message from Hermann is to prioritize your
alerts
so that only one can fire at any one time. I have had similar
experiences, more
than one under a variety of conditions.”
The solution
with the present system as
stated above is to program such that no two alerts can be triggered
simultaneously. I worked on it for a while with some excellent info
from
Hermann, but turned to other objectives before getting it smoothly
working.
I believe
that if one has only one alertif
statement in his code, then by definition, no two alerts can occur
simultaneously.
If you have more than one alertif, then you need to prioritize in some
way.
You can
search the archives for a lot of
traffic on this.
Hope this
helps.
Grover
Spoke too soon ... My
multiple alerts are back ...
this is frustrating!!! not sure I'll be able to use the feature if
this
continues..
----- Original Message
-----
Sent: Thursday,
October 06, 2005 9:11 AM
Subject: [amibroker]
Alertif() - Windows???
I just had a strange
behavior ...
One of my alerts kept
repeating continiously ... the
control values are set correctly to ... 0,12,1).
I rebooted PC and problem
cleared!.. I assume
the problem was not with Amibroker ... but I have heard other complain
of same
issue.
I have no idea why or how
this problem occured, but I
would like to suggest that if anyone finds programs that may cause
problems,
please share your experience... WINDOWS of course is always my prime
suspect
... but would be nice to be aware of other problem programs.