[system-traders] Buy Sell Arrows

[Rene Cunningham <rene AT dclabs.com.au>]

Gday,

Ive just started using GT so be kind ;)

Following Oliver's tutorial [0] im stuck trying to produce Buy Sell
Arrows with graphic.pl. My syntax is as follows

$ ./graphic.pl --add="Curve(Indicators::EMA 5,[255,0,0])" \
    --add="Curve(Indicators::EMA 20,[0,0,255])" \
    --add=BuySellArrows"(Systems::Generic Signals::Generic::CrossOverUp
{I:EMA 5} {I:EMA 20} Signals::Generic::CrossOverUp {I:EMA 5} {I:EMA
20} )" TLS.AX > TLS.png

The errors the command produces are as follows

Argument "Signals::Generic::CrossOverUp" isn't numeric in numeric eq
(==) at ../GT/Systems/Generic.pm line 36.
Argument "Signals::Generic::CrossOverUp" isn't numeric in numeric eq
(==) at ../GT/Systems/Generic.pm line 36.

Looking at Systems/Generic:36 i see

if ( $self->{'args'}->get_arg_values($calc, $i, 1) == 1)
{
    return 1;
}

What is get_arg_values() suppose to return? Ultimately, how can i
resolve this issue?

-- 

Rene Cunningham
DCLabs Pty Ltd
http://www.dclabs.com.au

[0] - http://www.olfsworld.de/projects/gt/doc/