Rel Perf Short Term

["nenapacwanfr" <nenapacwanfr@xxxx>]

Hi,

I want the rel perf of a stock against an index
but the start point would be a lookback period of 30 days .
have you an idea.

I have modified the Tz's initial code for dayofmonth, But I can't 
figure the code for a variable lookback period.
have you an idea?

steph



maxgraph = 14; // as many as you wish to use
startpoint =dayofmonth() < ref(dayofmonth(),-1) ;// the start point 
of comparison will be the dayofmonth bar 
// you can change the ticker below
price = foreign("^DJI", "C");
baseline = 100 * ( price/ValueWhen( startpoint, price ) - 1 );

// you can change the ticker below
price = Close ;
graph0 = 100 * ( price/ValueWhen( startpoint, price ) - 1 );
graph0style = 1; 
// base line chart 
graph1 = baseline;
graph1style = 1;