[MAS-tips] Re: [MAS-discuss] edit names of pre-set market analyzers

[Jim C. <jt...@di...>]

> I would like to edit the name of some market analysers that are
> already set. Out-of-the box MAS comes with 15 analysers listed
> with the "m=>v" option of macl. I do not want to have to remove
> them just to add them again with different names.
> 
> For example, i want to change
>  Volume > Yesterday's Volume EMA (5) * 3.5
> to
>  Volume > Yesterday's Volume EMA5 * 3.5 (volume spike up)
> so as to be consistent with the format of the other analyser names.
> 
> I found some files in /opt/mas/lib/config/ which looked like
> the way to go. However, this does not seem to have any effect.
> 
> Is there such a simple way?
> 
> --David

Hi David.

The market analyzers (along with the indicators) are stored in a binary data
file (called generators_persist), so the name of an analyzer cannot be
easily changed by editing a file.  Unfortunately, I have not yet added a
feature to allow changing analyzer or indicator names from the mas
command-line, which is where this capability probably should reside.

Until this feature is available, I think the best solution is to delete the
analyzer and, instead of recreating it by hand, copy its definition from
lib/config/market_analyzers to a new file.  In this case, search the
lib/config/market_analyzers file for the comment line:

# volume spike analyzer

and copy from there to the end of that analyzer specification (just before
the comment announcing the next analyzer).  You will get:

# volume spike analyzer
c
s
o
Market Data
y
GT_OPERATOR
c
VOLUME
c
MULTIPLICATION
c
FUNCTION_BASED_COMMAND
c
EMA of Volume
y
SETTABLE_OFFSET_COMMAND
c
BASIC_NUMERIC_COMMAND
c
1
CONSTANT
c
3.5
daily
o
# Name
Volume > Yesterday's Volume EMA (5) * 3.5
s


Put these lines into a file and append two lines to it:

-
x

These two lines will cause the mas shell to go back to the main menu and then
exit.  Then edit the file to plug in the name you want and then use the
macl -i <file> <portnumber>
format of the macl program (after starting the server with port
<portnumber>, of course) to input the commands from this new file into
the mas server to recreate the analyzer with the new name.

Let me know if you have any problems or questions.


Jim